Merge branch 'add-entry-via-doi'

+ implement the functionality to add an entry via DOI
+ responsive error messages if resolving of DOI don't work
+ keep changes to choosen file to minimum

12 files changed, 969 insertions, 74 deletions

diff --git a/.gitignore b/.gitignore
index 8bac1c1..ba75650 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,3 +6,7 @@
 **/*.tape
 res/*.gif
 res/*.png
+.direnv
+.devbox
+.envrc
+devbox.json
diff --git a/Cargo.lock b/Cargo.lock
index a6c926b..ddd8f7c 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1,6 +1,6 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
-version = 3
+version = 4
 
 [[package]]
 name = "addr2line"
@@ -24,6 +24,15 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "512761e0bb2578dd7380c6baaa0f4ce03e84f95e960231d1dec8bf4d7d6e2627"
 
 [[package]]
+name = "aho-corasick"
+version = "1.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8e60d3430d3a69478ad0993f19238d2df97c507009a52b3c10addcd7f6bcb916"
+dependencies = [
+ "memchr",
+]
+
+[[package]]
 name = "allocator-api2"
 version = "0.2.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -70,6 +79,12 @@ dependencies = [
 ]
 
 [[package]]
+name = "base64"
+version = "0.22.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "72b3254f16251a8381aa12e40e3c4d2f0199f8c6508fbecb9d91f575e0fbb8c6"
+
+[[package]]
 name = "bibiman"
 version = "0.8.2"
 dependencies = [
@@ -83,11 +98,14 @@ dependencies = [
  "itertools",
  "lexopt",
  "nucleo-matcher",
+ "rand",
  "ratatui",
+ "regex",
  "signal-hook",
  "tokio",
  "tokio-util",
  "tui-input",
+ "ureq",
  "walkdir",
 ]
 
@@ -132,6 +150,12 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8334215b81e418a0a7bdb8ef0849474f40bb10c8b71f1c4ed315cff49f32494d"
 
 [[package]]
+name = "byteorder"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1fd0f2584146f6f2ef48085050886acf353beff7305ebd1ae69500e27c67f64b"
+
+[[package]]
 name = "byteorder-lite"
 version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -337,6 +361,17 @@ dependencies = [
 ]
 
 [[package]]
+name = "displaydoc"
+version = "0.2.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "97369cbbc041bc366949bc74d34658d6cda5621039731c6310521892a3a20ae0"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
 name = "dlib"
 version = "0.5.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -469,6 +504,15 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "aa9a19cbb55df58761df49b23516a86d432839add4af60fc256da840f66ed35b"
 
 [[package]]
+name = "form_urlencoded"
+version = "1.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e13624c2627564efccf4934284bdd98cbaa14e79b0b5a141218e507b3a823456"
+dependencies = [
+ "percent-encoding",
+]
+
+[[package]]
 name = "futures"
 version = "0.3.31"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -617,6 +661,145 @@ dependencies = [
 ]
 
 [[package]]
+name = "icu_collections"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "db2fa452206ebee18c4b5c2274dbf1de17008e874b4dc4f0aea9d01ca79e4526"
+dependencies = [
+ "displaydoc",
+ "yoke",
+ "zerofrom",
+ "zerovec",
+]
+
+[[package]]
+name = "icu_locid"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "13acbb8371917fc971be86fc8057c41a64b521c184808a698c02acc242dbf637"
+dependencies = [
+ "displaydoc",
+ "litemap",
+ "tinystr",
+ "writeable",
+ "zerovec",
+]
+
+[[package]]
+name = "icu_locid_transform"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "01d11ac35de8e40fdeda00d9e1e9d92525f3f9d887cdd7aa81d727596788b54e"
+dependencies = [
+ "displaydoc",
+ "icu_locid",
+ "icu_locid_transform_data",
+ "icu_provider",
+ "tinystr",
+ "zerovec",
+]
+
+[[package]]
+name = "icu_locid_transform_data"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fdc8ff3388f852bede6b579ad4e978ab004f139284d7b28715f773507b946f6e"
+
+[[package]]
+name = "icu_normalizer"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "19ce3e0da2ec68599d193c93d088142efd7f9c5d6fc9b803774855747dc6a84f"
+dependencies = [
+ "displaydoc",
+ "icu_collections",
+ "icu_normalizer_data",
+ "icu_properties",
+ "icu_provider",
+ "smallvec",
+ "utf16_iter",
+ "utf8_iter",
+ "write16",
+ "zerovec",
+]
+
+[[package]]
+name = "icu_normalizer_data"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f8cafbf7aa791e9b22bec55a167906f9e1215fd475cd22adfcf660e03e989516"
+
+[[package]]
+name = "icu_properties"
+version = "1.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "93d6020766cfc6302c15dbbc9c8778c37e62c14427cb7f6e601d849e092aeef5"
+dependencies = [
+ "displaydoc",
+ "icu_collections",
+ "icu_locid_transform",
+ "icu_properties_data",
+ "icu_provider",
+ "tinystr",
+ "zerovec",
+]
+
+[[package]]
+name = "icu_properties_data"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "67a8effbc3dd3e4ba1afa8ad918d5684b8868b3b26500753effea8d2eed19569"
+
+[[package]]
+name = "icu_provider"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6ed421c8a8ef78d3e2dbc98a973be2f3770cb42b606e3ab18d6237c4dfde68d9"
+dependencies = [
+ "displaydoc",
+ "icu_locid",
+ "icu_provider_macros",
+ "stable_deref_trait",
+ "tinystr",
+ "writeable",
+ "yoke",
+ "zerofrom",
+ "zerovec",
+]
+
+[[package]]
+name = "icu_provider_macros"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1ec89e9337638ecdc08744df490b221a7399bf8d164eb52a665454e60e075ad6"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "idna"
+version = "1.0.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "686f825264d630750a544639377bae737628043f20d38bbc029e8f29ea968a7e"
+dependencies = [
+ "idna_adapter",
+ "smallvec",
+ "utf8_iter",
+]
+
+[[package]]
+name = "idna_adapter"
+version = "1.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "daca1df1c957320b2cf139ac61e7bd64fed304c5040df000a745aa1de3b4ef71"
+dependencies = [
+ "icu_normalizer",
+ "icu_properties",
+]
+
+[[package]]
 name = "image"
 version = "0.25.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -727,6 +910,12 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "78b3ae25bc7c8c38cec158d1f2757ee79e9b3740fbc7ccf0e59e4b08d793fa89"
 
 [[package]]
+name = "litemap"
+version = "0.7.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4ee93343901ab17bd981295f2cf0026d4ad018c7c31ba84549a4ddbb47a45104"
+
+[[package]]
 name = "lock_api"
 version = "0.4.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -1008,6 +1197,12 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "57c0d7b74b563b49d38dae00a0c37d4d6de9b432382b2892f0574ddcae73fd0a"
 
 [[package]]
+name = "percent-encoding"
+version = "2.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e3148f5046208a5d56bcfc03053e3ca6334e51da8dfb19b6cdc8b306fae3283e"
+
+[[package]]
 name = "petgraph"
 version = "0.6.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -1049,6 +1244,15 @@ dependencies = [
 ]
 
 [[package]]
+name = "ppv-lite86"
+version = "0.2.20"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "77957b295656769bb8ad2b6a6b09d897d94f05c41b069aede1fcdaa675eaea04"
+dependencies = [
+ "zerocopy",
+]
+
+[[package]]
 name = "proc-macro2"
 version = "1.0.87"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -1076,6 +1280,36 @@ dependencies = [
 ]
 
 [[package]]
+name = "rand"
+version = "0.8.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "34af8d1a0e25924bc5b7c43c079c942339d8f0a8b57c39049bef581b46327404"
+dependencies = [
+ "libc",
+ "rand_chacha",
+ "rand_core",
+]
+
+[[package]]
+name = "rand_chacha"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e6c10a63a0fa32252be49d21e7709d4d4baf8d231c2dbce1eaa8141b9b127d88"
+dependencies = [
+ "ppv-lite86",
+ "rand_core",
+]
+
+[[package]]
+name = "rand_core"
+version = "0.6.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ec0be4795e2f6a28069bec0b5ff3e2ac9bafc99e6a9a7dc3547996c5c816922c"
+dependencies = [
+ "getrandom",
+]
+
+[[package]]
 name = "ratatui"
 version = "0.29.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -1117,6 +1351,50 @@ dependencies = [
 ]
 
 [[package]]
+name = "regex"
+version = "1.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b544ef1b4eac5dc2db33ea63606ae9ffcfac26c1416a2806ae0bf5f56b201191"
+dependencies = [
+ "aho-corasick",
+ "memchr",
+ "regex-automata",
+ "regex-syntax",
+]
+
+[[package]]
+name = "regex-automata"
+version = "0.4.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "809e8dc61f6de73b46c85f4c96486310fe304c434cfa43669d7b40f711150908"
+dependencies = [
+ "aho-corasick",
+ "memchr",
+ "regex-syntax",
+]
+
+[[package]]
+name = "regex-syntax"
+version = "0.8.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2b15c43186be67a4fd63bee50d0303afffcef381492ebe2c5d87f324e1b8815c"
+
+[[package]]
+name = "ring"
+version = "0.17.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c17fa4cb658e3583423e915b9f3acc01cceaee1860e33d59ebae66adc3a2dc0d"
+dependencies = [
+ "cc",
+ "cfg-if",
+ "getrandom",
+ "libc",
+ "spin",
+ "untrusted",
+ "windows-sys 0.52.0",
+]
+
+[[package]]
 name = "rustc-demangle"
 version = "0.1.24"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -1136,6 +1414,38 @@ dependencies = [
 ]
 
 [[package]]
+name = "rustls"
+version = "0.23.19"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "934b404430bb06b3fae2cba809eb45a1ab1aecd64491213d7c3301b88393f8d1"
+dependencies = [
+ "log",
+ "once_cell",
+ "ring",
+ "rustls-pki-types",
+ "rustls-webpki",
+ "subtle",
+ "zeroize",
+]
+
+[[package]]
+name = "rustls-pki-types"
+version = "1.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "16f1201b3c9a7ee8039bcadc17b7e605e2945b27eee7631788c1bd2b0643674b"
+
+[[package]]
+name = "rustls-webpki"
+version = "0.102.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "64ca1bc8749bd4cf37b5ce386cc146580777b4e8572c7b97baf22c83f444bee9"
+dependencies = [
+ "ring",
+ "rustls-pki-types",
+ "untrusted",
+]
+
+[[package]]
 name = "rustversion"
 version = "1.0.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -1169,6 +1479,26 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "94143f37725109f92c262ed2cf5e59bce7498c01bcc1502d7b9afe439a4e9f49"
 
 [[package]]
+name = "serde"
+version = "1.0.210"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c8e3592472072e6e22e0a54d5904d9febf8508f65fb8552499a1abc7d1078c3a"
+dependencies = [
+ "serde_derive",
+]
+
+[[package]]
+name = "serde_derive"
+version = "1.0.210"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "243902eda00fad750862fc144cea25caca5e20d615af0a81bee94ca738f1df1f"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
 name = "sharded-slab"
 version = "0.1.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -1251,6 +1581,18 @@ dependencies = [
 ]
 
 [[package]]
+name = "spin"
+version = "0.9.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6980e8d7511241f8acf4aebddbb1ff938df5eebe98691418c4468d0b72a96a67"
+
+[[package]]
+name = "stable_deref_trait"
+version = "1.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a8f112729512f8e442d81f95a8a7ddf2b7c6b8a1a6f509a95864142b30cab2d3"
+
+[[package]]
 name = "static_assertions"
 version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -1279,6 +1621,12 @@ dependencies = [
 ]
 
 [[package]]
+name = "subtle"
+version = "2.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "13c2bddecc57b384dee18652358fb23172facb8a2c51ccc10d74c157bdea3292"
+
+[[package]]
 name = "syn"
 version = "2.0.79"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -1290,6 +1638,17 @@ dependencies = [
 ]
 
 [[package]]
+name = "synstructure"
+version = "0.13.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c8af7666ab7b6390ab78131fb5b0fce11d6b7a6951602017c35fa82800708971"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
 name = "tempfile"
 version = "3.13.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -1344,6 +1703,16 @@ dependencies = [
 ]
 
 [[package]]
+name = "tinystr"
+version = "0.7.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9117f5d4db391c1cf6927e7bea3db74b9a1c1add8f7eda9ffd5364f40f57b82f"
+dependencies = [
+ "displaydoc",
+ "zerovec",
+]
+
+[[package]]
 name = "tinyvec"
 version = "1.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -1516,6 +1885,51 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e9df2af067a7953e9c3831320f35c1cc0600c30d44d9f7a12b01db1cd88d6b47"
 
 [[package]]
+name = "untrusted"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8ecb6da28b8a351d773b68d5825ac39017e680750f980f3a1a85cd8dd28a47c1"
+
+[[package]]
+name = "ureq"
+version = "2.12.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "02d1a66277ed75f640d608235660df48c8e3c19f3b4edb6a263315626cc3c01d"
+dependencies = [
+ "base64",
+ "flate2",
+ "log",
+ "once_cell",
+ "rustls",
+ "rustls-pki-types",
+ "url",
+ "webpki-roots",
+]
+
+[[package]]
+name = "url"
+version = "2.5.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "32f8b686cadd1473f4bd0117a5d28d36b1ade384ea9b5069a1c40aefed7fda60"
+dependencies = [
+ "form_urlencoded",
+ "idna",
+ "percent-encoding",
+]
+
+[[package]]
+name = "utf16_iter"
+version = "1.0.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c8232dd3cdaed5356e0f716d285e4b40b932ac434100fe9b7e0e8e935b9e6246"
+
+[[package]]
+name = "utf8_iter"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b6c140620e7ffbb22c2dee59cafe6084a59b5ffc27a8859a5f0d494b5d52b6be"
+
+[[package]]
 name = "valuable"
 version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -1611,6 +2025,15 @@ dependencies = [
 ]
 
 [[package]]
+name = "webpki-roots"
+version = "0.26.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5d642ff16b7e79272ae451b7322067cdc17cadf68c23264be9d94a32319efe7e"
+dependencies = [
+ "rustls-pki-types",
+]
+
+[[package]]
 name = "weezl"
 version = "0.1.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -1816,6 +2239,18 @@ dependencies = [
 ]
 
 [[package]]
+name = "write16"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d1890f4022759daae28ed4fe62859b1236caebfc61ede2f63ed4e695f3f6d936"
+
+[[package]]
+name = "writeable"
+version = "0.5.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1e9df38ee2d2c3c5948ea468a8406ff0db0b29ae1ffde1bcf20ef305bcc95c51"
+
+[[package]]
 name = "x11rb"
 version = "0.13.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -1831,3 +2266,97 @@ name = "x11rb-protocol"
 version = "0.13.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ec107c4503ea0b4a98ef47356329af139c0a4f7750e621cf2973cd3385ebcb3d"
+
+[[package]]
+name = "yoke"
+version = "0.7.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "120e6aef9aa629e3d4f52dc8cc43a015c7724194c97dfaf45180d2daf2b77f40"
+dependencies = [
+ "serde",
+ "stable_deref_trait",
+ "yoke-derive",
+ "zerofrom",
+]
+
+[[package]]
+name = "yoke-derive"
+version = "0.7.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2380878cad4ac9aac1e2435f3eb4020e8374b5f13c296cb75b4620ff8e229154"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+ "synstructure",
+]
+
+[[package]]
+name = "zerocopy"
+version = "0.7.35"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1b9b4fd18abc82b8136838da5d50bae7bdea537c574d8dc1a34ed098d6c166f0"
+dependencies = [
+ "byteorder",
+ "zerocopy-derive",
+]
+
+[[package]]
+name = "zerocopy-derive"
+version = "0.7.35"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fa4f8080344d4671fb4e831a13ad1e68092748387dfc4f55e356242fae12ce3e"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "zerofrom"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cff3ee08c995dee1859d998dea82f7374f2826091dd9cd47def953cae446cd2e"
+dependencies = [
+ "zerofrom-derive",
+]
+
+[[package]]
+name = "zerofrom-derive"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "595eed982f7d355beb85837f651fa22e90b3c044842dc7f2c2842c086f295808"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+ "synstructure",
+]
+
+[[package]]
+name = "zeroize"
+version = "1.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ced3678a2879b30306d323f4542626697a464a97c0a07c9aebf7ebca65cd4dde"
+
+[[package]]
+name = "zerovec"
+version = "0.10.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "aa2b893d79df23bfb12d5461018d408ea19dfafe76c2c7ef6d4eba614f8ff079"
+dependencies = [
+ "yoke",
+ "zerofrom",
+ "zerovec-derive",
+]
+
+[[package]]
+name = "zerovec-derive"
+version = "0.10.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6eafa6dfb17584ea3e2bd6e76e0cc15ad7af12b09abdd1ca55961bed9b1063c6"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
diff --git a/Cargo.toml b/Cargo.toml
index c0952c0..ca1f146 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -24,6 +24,7 @@ dirs = "5.0.1"
 # doi = "0.3.0"
 editor-command = "0.1.1"
 futures = "0.3.30"
+rand = "0.8"
 itertools = "0.13.0"
 lexopt = "0.3.0"
 nucleo-matcher = "0.3.1"
@@ -33,3 +34,5 @@ tokio = { version = "1.39.3", features = ["full"] }
 tokio-util = "0.7.12"
 tui-input = "0.11.0"
 walkdir = "2.5.0"
+regex = "1.11.1"
+ureq = "2.12.1"
diff --git a/README.md b/README.md
index bf1749e..069b6d4 100644
--- a/README.md
+++ b/README.md
@@ -116,8 +116,8 @@ my personal workflow. There are more to come, the list will be updated:
 - [x] **Scrollbar** for better navigating.
 - [x] **Sort Entries** by column (`Authors`, `Title`, `Year`, `Pubtype`)
 - [x] **Load multiple files** into one session.
+- [x] **Add Entry via DOI** as formatted code.
 - [ ] **Open related notes file** for specific entry.
-- [ ] **Add Entry via DOI** as formatted code.
 - [ ] **Implement config file** for setting some default values like main
       bibfile, PDF-opener, or editor
 - [ ] **Support Hayagriva(`.yaml`)** format as input (_on hold for now_, because
diff --git a/src/app.rs b/src/app.rs
index 54d42b6..2240e8f 100644
--- a/src/app.rs
+++ b/src/app.rs
@@ -23,6 +23,7 @@ use crate::tui::commands::InputCmdAction;
 use crate::tui::popup::PopupKind;
 use crate::tui::{self, Tui};
 use crate::{bibiman::Bibiman, tui::commands::CmdAction};
+use core::panic;
 use std::ffi::OsStr;
 use std::path::PathBuf;
 use std::process::{Command, Stdio};
@@ -58,7 +59,7 @@ impl App {
         })
     }
 
-    pub async fn run(&mut self, args: &CLIArgs) -> Result<()> {
+    pub async fn run(&mut self, args: &mut CLIArgs) -> Result<()> {
         let mut tui = tui::Tui::new()?;
         tui.enter()?;
 
@@ -109,29 +110,61 @@ impl App {
         self.running = false;
     }
 
-    pub fn run_command(&mut self, cmd: CmdAction, args: &CLIArgs, tui: &mut Tui) -> Result<()> {
+    pub fn run_command(&mut self, cmd: CmdAction, args: &mut CLIArgs, tui: &mut Tui) -> Result<()> {
         match cmd {
             CmdAction::Input(cmd) => match cmd {
                 InputCmdAction::Nothing => {}
                 InputCmdAction::Handle(event) => {
                     self.input.handle_event(&event);
-                    self.bibiman.search_list_by_pattern(&self.input);
+                    if let CurrentArea::SearchArea = self.bibiman.current_area {
+                        self.bibiman.search_list_by_pattern(&self.input);
+                    }
                 }
                 InputCmdAction::Enter => {
                     self.input_mode = true;
                     // Logic for TABS to be added
-                    self.bibiman.enter_search_area();
+                    // self.bibiman.enter_search_area();
                 }
                 InputCmdAction::Confirm => {
+                    // Logic for TABS to be added
+                    if let CurrentArea::SearchArea = self.bibiman.current_area {
+                        self.bibiman.confirm_search();
+                    } else if let CurrentArea::PopupArea = self.bibiman.current_area {
+                        match self.bibiman.popup_area.popup_kind {
+                            Some(PopupKind::AddEntry) => {
+                                let doi = self.input.value();
+                                self.bibiman.close_popup();
+                                self.input_mode = false;
+                                // Check if the DOI pattern is valid. If not, show warning and break
+                                if doi.starts_with("10.")
+                                    || doi.starts_with("https://doi.org")
+                                    || doi.starts_with("https://dx.doi.org")
+                                    || doi.starts_with("http://doi.org")
+                                    || doi.starts_with("http://dx.doi.org")
+                                {
+                                    self.bibiman.handle_new_entry_submission(args, doi);
+                                } else {
+                                    self.bibiman.popup_area.popup_message(
+                                        "No valid DOI pattern: ",
+                                        doi,
+                                        false,
+                                    );
+                                }
+                            }
+                            _ => {}
+                        }
+                    }
                     self.input = Input::default();
                     self.input_mode = false;
-                    // Logic for TABS to be added
-                    self.bibiman.confirm_search();
                 }
                 InputCmdAction::Exit => {
                     self.input = Input::default();
                     self.input_mode = false;
-                    self.bibiman.break_search();
+                    if let CurrentArea::SearchArea = self.bibiman.current_area {
+                        self.bibiman.break_search();
+                    } else if let CurrentArea::PopupArea = self.bibiman.current_area {
+                        self.bibiman.close_popup();
+                    }
                 }
             },
             CmdAction::SelectNextRow(amount) => match self.bibiman.current_area {
@@ -142,13 +175,15 @@ impl App {
                 CurrentArea::TagArea => {
                     self.bibiman.select_next_tag(amount);
                 }
-                CurrentArea::PopupArea => {
-                    if let Some(PopupKind::Help) = self.bibiman.popup_area.popup_kind {
+                CurrentArea::PopupArea => match self.bibiman.popup_area.popup_kind {
+                    Some(PopupKind::Help) => {
                         self.bibiman.popup_area.popup_scroll_down();
-                    } else if let Some(PopupKind::Selection) = self.bibiman.popup_area.popup_kind {
+                    }
+                    Some(PopupKind::OpenRes) | Some(PopupKind::AppendToFile) => {
                         self.bibiman.popup_area.popup_state.scroll_down_by(1)
                     }
-                }
+                    _ => {}
+                },
                 _ => {}
             },
             CmdAction::SelectPrevRow(amount) => match self.bibiman.current_area {
@@ -159,13 +194,15 @@ impl App {
                 CurrentArea::TagArea => {
                     self.bibiman.select_previous_tag(amount);
                 }
-                CurrentArea::PopupArea => {
-                    if let Some(PopupKind::Help) = self.bibiman.popup_area.popup_kind {
+                CurrentArea::PopupArea => match self.bibiman.popup_area.popup_kind {
+                    Some(PopupKind::Help) => {
                         self.bibiman.popup_area.popup_scroll_up();
-                    } else if let Some(PopupKind::Selection) = self.bibiman.popup_area.popup_kind {
+                    }
+                    Some(PopupKind::OpenRes) | Some(PopupKind::AppendToFile) => {
                         self.bibiman.popup_area.popup_state.scroll_up_by(1)
                     }
-                }
+                    _ => {}
+                },
                 _ => {}
             },
             CmdAction::SelectNextCol => {
@@ -205,14 +242,20 @@ impl App {
             CmdAction::ToggleArea => {
                 self.bibiman.toggle_area();
             }
-            CmdAction::SearchList => {}
+            CmdAction::SearchList => {
+                self.input_mode = true;
+                self.bibiman.enter_search_area();
+            }
             CmdAction::Reset => {
                 if let CurrentArea::PopupArea = self.bibiman.current_area {
                     if let Some(PopupKind::Help) = self.bibiman.popup_area.popup_kind {
                         self.bibiman.popup_area.popup_scroll_pos = 0;
                         self.bibiman.close_popup()
-                    } else if let Some(PopupKind::Selection) = self.bibiman.popup_area.popup_kind {
+                    } else if let Some(PopupKind::OpenRes) = self.bibiman.popup_area.popup_kind {
                         self.bibiman.close_popup()
+                    } else if let Some(PopupKind::AppendToFile) = self.bibiman.popup_area.popup_kind
+                    {
+                        self.bibiman.close_popup();
                     }
                 } else {
                     self.bibiman.reset_current_list();
@@ -224,33 +267,11 @@ impl App {
                 } else if let CurrentArea::PopupArea = self.bibiman.current_area {
                     if let Some(PopupKind::Help) = self.bibiman.popup_area.popup_kind {
                         self.bibiman.close_popup();
-                    } else if let Some(PopupKind::Selection) = self.bibiman.popup_area.popup_kind {
-                        // Index of selected entry
-                        let entry_idx = self
-                            .bibiman
-                            .entry_table
-                            .entry_table_state
-                            .selected()
-                            .unwrap();
-
-                        // Index of selected popup field
-                        let popup_idx = self.bibiman.popup_area.popup_state.selected().unwrap();
-
-                        // Choose ressource depending an selected popup field
-                        if self.bibiman.popup_area.popup_list[popup_idx].contains("Weblink") {
-                            let object =
-                                self.bibiman.entry_table.entry_table_items[entry_idx].doi_url();
-                            let url = prepare_weblink(object);
-                            open_connected_link(&url)?;
-                        } else if self.bibiman.popup_area.popup_list[popup_idx].contains("File") {
-                            let object =
-                                self.bibiman.entry_table.entry_table_items[entry_idx].filepath();
-                            open_connected_file(object)?;
-                        } else {
-                            eprintln!("Unable to find ressource to open");
-                        };
-                        // run command to open file/Url
-                        self.bibiman.close_popup()
+                    } else if let Some(PopupKind::OpenRes) = self.bibiman.popup_area.popup_kind {
+                        self.bibiman.open_connected_res()?;
+                    } else if let Some(PopupKind::AppendToFile) = self.bibiman.popup_area.popup_kind
+                    {
+                        self.bibiman.append_entry_to_file(args)?
                     }
                 }
             }
@@ -299,6 +320,7 @@ impl App {
                         if entry.filepath.is_some() {
                             items.push("File (PDF/EPUB)".to_owned())
                         }
+                        self.bibiman.popup_area.popup_kind = Some(PopupKind::OpenRes);
                         self.bibiman.popup_area.popup_selection(items);
                         self.bibiman.former_area = Some(FormerArea::EntryArea);
                         self.bibiman.current_area = CurrentArea::PopupArea;
@@ -312,6 +334,12 @@ impl App {
                     }
                 }
             }
+            CmdAction::AddEntry => {
+                if let CurrentArea::EntryArea = self.bibiman.current_area {
+                    self.input_mode = true;
+                    self.bibiman.add_entry();
+                }
+            }
             CmdAction::ShowHelp => {
                 self.bibiman.show_help();
             }
diff --git a/src/bibiman.rs b/src/bibiman.rs
index bba3eec..0c0d99b 100644
--- a/src/bibiman.rs
+++ b/src/bibiman.rs
@@ -15,6 +15,7 @@
 // along with this program.  If not, see <https://www.gnu.org/licenses/>.
 /////
 
+use crate::app;
 use crate::bibiman::entries::EntryTableColumn;
 use crate::bibiman::{bibisetup::*, search::BibiSearch};
 use crate::cliargs::CLIArgs;
@@ -22,11 +23,17 @@ use crate::tui::popup::{PopupArea, PopupKind};
 use crate::tui::Tui;
 use crate::{bibiman::entries::EntryTable, bibiman::keywords::TagList};
 use arboard::Clipboard;
-use color_eyre::eyre::{Ok, Result};
+use color_eyre::eyre::Result;
 use editor_command::EditorBuilder;
+use futures::executor::block_on;
 use ratatui::widgets::ScrollbarState;
+use regex::Regex;
 use std::fs;
+use std::fs::{File, OpenOptions};
+use std::io::Write;
+use std::path::PathBuf;
 use std::process::Command;
+use std::result::Result::Ok;
 use tui_input::Input;
 
 pub mod bibisetup;
@@ -107,6 +114,48 @@ impl Bibiman {
         self.popup_area.popup_kind = Some(PopupKind::Help);
     }
 
+    pub fn add_entry(&mut self) {
+        if let CurrentArea::EntryArea = self.current_area {
+            self.former_area = Some(FormerArea::EntryArea);
+        }
+        self.popup_area.is_popup = true;
+        self.current_area = CurrentArea::PopupArea;
+        self.popup_area.popup_kind = Some(PopupKind::AddEntry);
+    }
+
+    ///Try to resolve entered DOI. If successfull, choose file where to append
+    ///the new entry via `append_to_file()` function. If not, show error popup
+    ///
+    ///The method needs two arguments: the CLIArgs struct and the `str` containing the DOI
+    pub fn handle_new_entry_submission(&mut self, args: &CLIArgs, doi_string: &str) {
+        let doi_string = if doi_string.starts_with("10.") {
+            "https://doi.org/".to_string() + doi_string
+        } else {
+            doi_string.to_owned()
+        };
+
+        // Send GET request to doi resolver
+        let doi_entry = ureq::get(&doi_string)
+            .set("Accept", "application/x-bibtex")
+            .call();
+
+        if let Ok(entry) = doi_entry {
+            // Save generated bibtex entry in structs field
+            let entry = entry
+                .into_string()
+                .expect("Couldn't parse fetched entry into string");
+            self.popup_area.popup_sel_item = entry;
+            self.popup_area.popup_kind = Some(PopupKind::AppendToFile);
+            self.append_to_file(args);
+            self.former_area = Some(FormerArea::EntryArea);
+            self.current_area = CurrentArea::PopupArea;
+            self.popup_area.popup_state.select(Some(0))
+        } else {
+            self.popup_area
+                .popup_message("Can't find DOI: ", &doi_string, false);
+        }
+    }
+
     pub fn close_popup(&mut self) {
         // Reset all popup fields to default values
         self.popup_area = PopupArea::default();
@@ -299,6 +348,26 @@ impl Bibiman {
         }
     }
 
+    pub fn select_entry_by_citekey(&mut self, citekey: &str) {
+        // Search for entry by matching citekeys
+        let mut idx_count = 0;
+        loop {
+            if idx_count == self.entry_table.entry_table_items.len() {
+                idx_count = 0;
+                break;
+            } else if self.entry_table.entry_table_items[idx_count]
+                .citekey
+                .contains(citekey)
+            {
+                break;
+            }
+            idx_count += 1
+        }
+
+        // Set selected entry to vec-index of match
+        self.entry_table.entry_table_state.select(Some(idx_count));
+    }
+
     pub fn run_editor(&mut self, args: &CLIArgs, tui: &mut Tui) -> Result<()> {
         // get filecontent and citekey for calculating line number
         let citekey: &str = &self.entry_table.entry_table_items
@@ -367,25 +436,205 @@ impl Bibiman {
         // Update the database and the lists to show changes
         Self::update_lists(self, args);
 
-        // Search for entry, selected before editing, by matching citekeys
-        // Use earlier saved copy of citekey to match
-        let mut idx_count = 0;
-        loop {
-            if self.entry_table.entry_table_items[idx_count]
-                .citekey
-                .contains(citekey)
-            {
-                break;
+        // Select entry which was selected before entering editor
+        self.select_entry_by_citekey(citekey);
+
+        Ok(())
+    }
+
+    pub fn append_to_file(&mut self, args: &CLIArgs) {
+        let mut items = vec!["Create new file".to_owned()];
+        if args.files.len() > 1 {
+            for f in args.files.clone() {
+                items.push(f.to_str().unwrap().to_owned());
             }
-            idx_count += 1
+        } else {
+            items.push(args.files.first().unwrap().to_str().unwrap().to_owned());
         }
+        self.popup_area.popup_selection(items);
+    }
 
-        // Set selected entry to vec-index of match
-        self.entry_table.entry_table_state.select(Some(idx_count));
+    pub fn append_entry_to_file(&mut self, args: &mut CLIArgs) -> Result<()> {
+        // Index of selected popup field
+        let popup_idx = self.popup_area.popup_state.selected().unwrap();
+
+        // regex pattern to match citekey in fetched bibtexstring
+        let pattern = Regex::new(r"\{([^\{\},]*),").unwrap();
+
+        let citekey = pattern
+            .captures(&self.popup_area.popup_sel_item)
+            .unwrap()
+            .get(1)
+            .unwrap()
+            .as_str()
+            .to_string();
+
+        // Check if new file or existing file was choosen
+        let mut file = if self.popup_area.popup_list[popup_idx].contains("Create new file") {
+            let citekey = PathBuf::from(&citekey);
+            // Get path of current files
+            let path: PathBuf = if args.files[0].is_file() {
+                args.files[0].parent().unwrap().to_owned()
+            } else {
+                dirs::home_dir().unwrap() // home dir as fallback
+            };
+
+            let citekey = citekey.with_extension("bib");
+
+            let newfile = path.join(citekey);
+
+            args.files.push(newfile.clone());
+
+            File::create_new(newfile).unwrap()
+        } else {
+            let file_path = &args.files[popup_idx - 1];
+            OpenOptions::new().append(true).open(file_path).unwrap()
+        };
+        // Optionally, add a newline before the content
+        file.write_all(b"\n")?;
+        // Write content to file
+        file.write_all(self.popup_area.popup_sel_item.as_bytes())?;
+        // Update the database and the lists to reflect the new content
+        self.update_lists(args);
+        self.close_popup();
+
+        // Select newly created entry
+        self.select_entry_by_citekey(&citekey);
+
+        Ok(())
+    }
+
+    pub fn open_connected_res(&mut self) -> Result<()> {
+        // Index of selected entry
+        let entry_idx = self.entry_table.entry_table_state.selected().unwrap();
+
+        // Index of selected popup field
+        let popup_idx = self.popup_area.popup_state.selected().unwrap();
+
+        // Choose ressource depending an selected popup field
+        if self.popup_area.popup_list[popup_idx].contains("Weblink") {
+            let object = self.entry_table.entry_table_items[entry_idx].doi_url();
+            let url = app::prepare_weblink(object);
+            app::open_connected_link(&url)?;
+        } else if self.popup_area.popup_list[popup_idx].contains("File") {
+            let object = self.entry_table.entry_table_items[entry_idx].filepath();
+            app::open_connected_file(object)?;
+        } else {
+            eprintln!("Unable to find ressource to open");
+        };
+        // run command to open file/Url
+        self.close_popup();
 
         Ok(())
     }
 
+    /// Formats a raw BibTeX entry string for better readability.
+    pub fn format_bibtex_entry(entry: &str, file_path: &str) -> String {
+        let mut formatted = String::new();
+
+        // Find the position of the first '{'
+        if let Some(start_brace_pos) = entry.find('{') {
+            // Extract the preamble (e.g., '@article{')
+            let preamble = &entry[..start_brace_pos + 1];
+            let preamble = preamble.trim_start();
+            formatted.push_str(preamble);
+            // formatted.push('\n'); // Add newline
+
+            // Get the content inside the braces
+            let rest = &entry[start_brace_pos + 1..];
+            // Remove the last '}' at the end, if present
+            let rest = rest.trim_end();
+            let rest = if rest.ends_with('}') {
+                &rest[..rest.len() - 1]
+            } else {
+                rest
+            };
+
+            // Parse the fields, considering braces and quotes
+            let mut fields = Vec::new();
+            let mut current_field = String::new();
+            let mut brace_level = 0;
+            let mut in_quotes = false;
+            for c in rest.chars() {
+                match c {
+                    '{' if !in_quotes => {
+                        brace_level += 1;
+                        current_field.push(c);
+                    }
+                    '}' if !in_quotes => {
+                        brace_level -= 1;
+                        current_field.push(c);
+                    }
+                    '"' => {
+                        in_quotes = !in_quotes;
+                        current_field.push(c);
+                    }
+                    ',' if brace_level == 0 && !in_quotes => {
+                        // Outside of braces and quotes, comma separates fields
+                        fields.push(current_field.trim().to_string());
+                        current_field.clear();
+                    }
+                    _ => {
+                        current_field.push(c);
+                    }
+                }
+            }
+            // Add the last field
+            if !current_field.trim().is_empty() {
+                fields.push(current_field.trim().to_string());
+            }
+
+            // **Conditionally Clean the Citation Key**
+            if let Some(citation_key) = fields.get_mut(0) {
+                // Check if the citation key contains any non-alphanumerical characters except underscores
+                let needs_cleaning = citation_key
+                    .chars()
+                    .any(|c| !c.is_alphanumeric() && c != '_');
+                if needs_cleaning {
+                    // Retain only alphanumerical characters and underscores
+                    let cleaned_key: String = citation_key
+                        .chars()
+                        .filter(|c| c.is_alphanumeric() || *c == '_')
+                        .collect();
+                    // If the cleaned key is longer than 14 characters, retain only the last 14
+                    let limited_key = if cleaned_key.len() > 14 {
+                        cleaned_key
+                            .chars()
+                            .rev()
+                            .take(14)
+                            .collect::<String>()
+                            .chars()
+                            .rev()
+                            .collect()
+                    } else {
+                        cleaned_key
+                    };
+                    // Replace the original citation key with the cleaned and possibly limited key
+                    *citation_key = limited_key;
+                }
+            }
+
+            // Add the new 'file' field
+            let file_field = format!("file = {{{}}}", file_path);
+            fields.push(file_field);
+
+            // Reconstruct the entry with proper indentation
+            for (i, field) in fields.iter().enumerate() {
+                formatted.push_str("    ");
+                formatted.push_str(field);
+                // Add a comma if it's not the last field
+                if i < fields.len() - 1 {
+                    formatted.push(',');
+                }
+                formatted.push('\n');
+            }
+            formatted.push('}'); // Close the entry
+            formatted
+        } else {
+            // No opening brace found, return the entry as is
+            entry.to_string()
+        }
+    }
     // Search entry list
     pub fn search_entries(&mut self) {
         // Use snapshot of entry list saved when starting the search
@@ -594,7 +843,7 @@ impl Bibiman {
 
 #[cfg(test)]
 mod tests {
-    // use super::*;
+    use super::*;
 
     #[test]
     fn citekey_pattern() {
@@ -602,4 +851,15 @@ mod tests {
 
         assert_eq!(citekey, "{a_key_2001,")
     }
+
+    #[test]
+    fn regex_capture_citekey() {
+        let re = Regex::new(r"\{([^\{\},]*),").unwrap();
+
+        let bibstring = String::from("@article{citekey77_2001:!?, author = {Hanks, Tom}, title = {A great book}, year = {2001}}");
+
+        let result = re.captures(&bibstring).unwrap();
+
+        assert_eq!(result.get(1).unwrap().as_str(), "citekey77_2001:!?")
+    }
 }
diff --git a/src/main.rs b/src/main.rs
index b1160e2..78c5075 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -29,7 +29,7 @@ pub mod tui;
 #[tokio::main]
 async fn main() -> Result<()> {
     // Parse CLI arguments
-    let parsed_args = CLIArgs::parse_args().unwrap();
+    let mut parsed_args = CLIArgs::parse_args().unwrap();
 
     // Print help if -h/--help flag is passed and exit
     if parsed_args.helparg {
@@ -48,6 +48,6 @@ async fn main() -> Result<()> {
     // Create an application.
     let mut app = App::new(&parsed_args)?;
 
-    app.run(&parsed_args).await?;
+    app.run(&mut parsed_args).await?;
     Ok(())
 }
diff --git a/src/tui/commands.rs b/src/tui/commands.rs
index a3049ee..0e00f95 100644
--- a/src/tui/commands.rs
+++ b/src/tui/commands.rs
@@ -69,6 +69,8 @@ pub enum CmdAction {
     Exit,
     // Show keybindings
     ShowHelp,
+    // Add new entry
+    AddEntry,
     // Do nothing.
     Nothing,
 }
@@ -110,7 +112,6 @@ impl From<KeyEvent> for CmdAction {
                     Self::SelectPrevRow(5)
                 } else {
                     Self::Nothing
-                    // Self::Open(OpenRessource::WebLink)
                 }
             }
             // Scroll info/preview area
@@ -118,6 +119,8 @@ impl From<KeyEvent> for CmdAction {
             KeyCode::PageUp => Self::ScrollInfoUp,
             // Exit App
             KeyCode::Char('q') => Self::Exit,
+            // Add new entry
+            KeyCode::Char('a') => Self::AddEntry,
             KeyCode::Char('c') | KeyCode::Char('C') => {
                 if key_event.modifiers == KeyModifiers::CONTROL {
                     Self::Exit
@@ -129,15 +132,14 @@ impl From<KeyEvent> for CmdAction {
             KeyCode::Tab => Self::ToggleArea,
             KeyCode::BackTab => Self::ToggleArea,
             // Enter search mode
-            KeyCode::Char('/') => Self::Input(InputCmdAction::Enter),
+            KeyCode::Char('/') => Self::SearchList,
             KeyCode::Char('f') => {
                 if key_event.modifiers == KeyModifiers::CONTROL {
-                    Self::Input(InputCmdAction::Enter)
+                    Self::SearchList
                 } else {
                     Self::Nothing
                 }
             }
-            // KeyCode::Backspace => Self::Input(InputCommand::Resume(Event::Key(key_event))),
             // Confirm selection
             KeyCode::Enter => Self::Confirm,
             // Reset lists/tables
diff --git a/src/tui/popup.rs b/src/tui/popup.rs
index 890e5c8..78a0719 100644
--- a/src/tui/popup.rs
+++ b/src/tui/popup.rs
@@ -28,7 +28,9 @@ pub enum PopupKind {
     Help,
     MessageConfirm,
     MessageError,
-    Selection,
+    OpenRes,
+    AppendToFile,
+    AddEntry,
 }
 
 #[derive(Debug, Default)]
@@ -39,6 +41,9 @@ pub struct PopupArea {
     pub popup_scroll_pos: u16,
     pub popup_list: Vec<String>,
     pub popup_state: ListState,
+    pub popup_sel_item: String,
+    // pub add_entry_input: String,
+    // pub add_entry_cursor_position: usize,
 }
 
 impl PopupArea {
@@ -60,6 +65,7 @@ impl PopupArea {
             ("e: ", "Open editor at selected entry"),
             ("o: ", "Open with selected entry associated PDF"),
             ("u: ", "Open DOI/URL of selected entry"),
+            ("a: ", "Add new entry"),
             ("ESC: ", "Reset all lists"),
             ("Keyword List", "sub"),
             ("j,k|↓,↑: ", "Select next/previous item"),
@@ -119,7 +125,7 @@ impl PopupArea {
 
     pub fn popup_selection(&mut self, items: Vec<String>) {
         self.popup_list = items;
-        self.popup_kind = Some(PopupKind::Selection);
+        // self.popup_kind = Some(PopupKind::SelectRes);
         self.is_popup = true;
     }
 
diff --git a/src/tui/ui.rs b/src/tui/ui.rs
index cca87ce..4f64338 100644
--- a/src/tui/ui.rs
+++ b/src/tui/ui.rs
@@ -181,6 +181,46 @@ pub fn render_popup(app: &mut App, args: &CLIArgs, frame: &mut Frame) {
             frame.render_widget(Clear, popup_area);
             frame.render_widget(par, popup_area)
         }
+
+        Some(PopupKind::AddEntry) => {
+            let area = frame.area();
+
+            let block = Block::bordered()
+                .title_top(" Add Entry ".bold())
+                .title_bottom(" (ESC) ━ (ENTER) ".bold())
+                .title_alignment(Alignment::Center)
+                .style(
+                    Style::new()
+                        .fg(Color::Indexed(args.colors.main_text_color))
+                        .bg(Color::Indexed(args.colors.popup_bg_color)),
+                )
+                .border_set(symbols::border::THICK)
+                .border_style(Style::new().fg(Color::Indexed(args.colors.entry_color)));
+
+            // Prepare the input fields
+            let content = vec![Line::from(vec![
+                Span::styled(
+                    "DOI: ",
+                    Style::new().fg(Color::Indexed(args.colors.entry_color)),
+                ),
+                Span::raw(app.input.value().to_string().clone()),
+            ])];
+            let paragraph = Paragraph::new(content)
+                .block(block.clone())
+                .style(Style::new().fg(Color::Indexed(args.colors.main_text_color)))
+                .wrap(Wrap { trim: false });
+
+            let doi_lines = paragraph.line_count(area.width / 2);
+            // Calculate popup size
+            let popup_width = area.width / 4 * 3;
+            let popup_height = doi_lines as u16; // Adjust as needed
+            let popup_area = popup_area(area, popup_width, popup_height);
+
+            // Render the popup
+            frame.render_widget(Clear, popup_area);
+            render_cursor(app, frame, popup_area, 6, doi_lines as u16 - 1);
+            frame.render_widget(paragraph, popup_area);
+        }
         Some(PopupKind::MessageConfirm) => {
             let area = frame.area();
 
@@ -243,7 +283,7 @@ pub fn render_popup(app: &mut App, args: &CLIArgs, frame: &mut Frame) {
             frame.render_widget(Clear, popup_area);
             frame.render_widget(&content, popup_area)
         }
-        Some(PopupKind::Selection) => {
+        Some(PopupKind::OpenRes) | Some(PopupKind::AppendToFile) => {
             let list_items: Vec<ListItem> = app
                 .bibiman
                 .popup_area
@@ -252,8 +292,16 @@ pub fn render_popup(app: &mut App, args: &CLIArgs, frame: &mut Frame) {
                 .map(|item| ListItem::from(item.to_owned()))
                 .collect();
 
+            let title = if let Some(PopupKind::OpenRes) = app.bibiman.popup_area.popup_kind {
+                " Open "
+            } else if let Some(PopupKind::AppendToFile) = app.bibiman.popup_area.popup_kind {
+                " Select file to append entry "
+            } else {
+                " Select "
+            };
+
             let block = Block::bordered()
-                .title_top(" Open ".bold())
+                .title_top(title.bold())
                 .title_bottom(" (j,k|↓,↑) ━ (ENTER) ━ (ESC) ".bold())
                 .title_alignment(Alignment::Center)
                 .style(
@@ -327,7 +375,7 @@ pub fn render_footer(app: &mut App, args: &CLIArgs, frame: &mut Frame, rect: Rec
     ]))
     .block(block);
 
-    render_cursor(app, frame, rect, title_lenght + 1);
+    render_cursor(app, frame, rect, title_lenght + 1, 1);
     frame.render_widget(search_string, rect);
 }
 
@@ -986,12 +1034,13 @@ pub fn render_taglist(app: &mut App, args: &CLIArgs, frame: &mut Frame, rect: Re
 }
 
 /// Render the cursor when in InputMode
-fn render_cursor(app: &mut App, frame: &mut Frame, area: Rect, x_offset: u16) {
+fn render_cursor(app: &mut App, frame: &mut Frame, area: Rect, x_offset: u16, y_offset: u16) {
     let scroll = app.input.visual_scroll(area.width as usize);
     if app.input_mode {
         let (x, y) = (
             area.x + ((app.input.visual_cursor()).max(scroll) - scroll) as u16 + x_offset,
-            area.bottom().saturating_sub(1),
+            // area.bottom().saturating_sub(1) + y_offset,
+            area.bottom().saturating_sub(y_offset),
         );
         frame.render_widget(
             Clear,
diff --git a/tests/biblatex-test.bib b/tests/biblatex-test.bib
index b366fc3..d0fc0a6 100644
--- a/tests/biblatex-test.bib
+++ b/tests/biblatex-test.bib
@@ -65,7 +65,7 @@
     author        = {Aristotle},
     location      = {New York},
     publisher     = {G. P. Putnam},
-    url           = {infobooks.org/authors/classic/aristotle-books/#Physic},
+    url           = {https://www.infobooks.org/authors/classic/aristotle-books/#Physic},
     date          = {1929},
     translator    = {Wicksteed, P. H. and Cornford, F. M.},
     keywords      = {primary, ancient, philosophy},
diff --git a/tests/multi-files/bibfile1.bib b/tests/multi-files/bibfile1.bib
index 31d81bc..230a517 100644
--- a/tests/multi-files/bibfile1.bib
+++ b/tests/multi-files/bibfile1.bib
@@ -11,3 +11,17 @@
     langidopts    = {variant=american},
     annotation    = {A \texttt{collection} entry providing the excerpt information for the \texttt{doody} entry. Note the format of the \texttt{pages} field},
 }
+
+@book{
+    Bernal_2001,
+    title={Black Athena Writes Back: Martin Bernal Responds to His Critics},
+    ISBN={9780822380078},
+    url={http://dx.doi.org/10.1515/9780822380078},
+    DOI={10.1515/9780822380078},
+    publisher={Duke University Press},
+    author={Bernal, Martin},
+    editor={Moore, David Chioni},
+    year={2001},
+    month=sep,
+    file = {}
+}
\ No newline at end of file