make starting from zero work on Android + Windows

Cargo.lock

@@ -645,6 +645,7 @@ dependencies = [
  "tauri-plugin-opener",
  "tokio",
  "zip",
+ "zstd",
 ]
 
 [[package]]

package.json

@@ -4,9 +4,9 @@
   "version": "0.1.0",
   "type": "module",
   "scripts": {
-    "dev:desktop": "tauri dev",
-    "dev:mobile": "tauri dev -c src-tauri/tauri.mobile.conf.json",
-    "dev:android": "tauri android dev",
+    "dev:desktop": "cross-env RUST_BACKTRACE=1 tauri dev",
+    "dev:mobile": "cross-env RUST_BACKTRACE=1 tauri dev -c src-tauri/tauri.mobile.conf.json",
+    "dev:android": "cross-env RUST_BACKTRACE=1 tauri android dev",
     "build:desktop": "tauri build",
     "build:android": "tauri android build",
     "install:android": "adb install -r src-tauri/gen/android/app/build/outputs/apk/universal/release/app-universal-release.apk",
@@ -17,6 +17,7 @@
     "tauri": "tauri"
   },
   "devDependencies": {
-    "@tauri-apps/cli": "^2"
+    "@tauri-apps/cli": "^2",
+    "cross-env": "^10.1.0"
   }
 }

pnpm-lock.yaml

@@ -11,6 +11,9 @@ importers:
       '@tauri-apps/cli':
         specifier: ^2
         version: 2.10.0
+      cross-env:
+        specifier: ^10.1.0
+        version: 10.1.0
 
   js-server:
     dependencies:
@@ -256,6 +259,9 @@ packages:
   '@emotion/weak-memoize@0.4.0':
     resolution: {integrity: sha512-snKqtPW01tN0ui7yu9rGv69aJXr/a/Ywvl11sUjNtEcRc+ng/mQriFL0wLXMef74iHa/EkftbDzU9F8iFbH+zg==}
 
+  '@epic-web/invariant@1.0.0':
+    resolution: {integrity: sha512-lrTPqgvfFQtR/eY/qkIzp98OGdNJu0m5ji3q/nJI8v3SXkRKEnWiOxMmbvcSoAIzv/cGiuvRy57k4suKQSAdwA==}
+
   '@esbuild/aix-ppc64@0.27.3':
     resolution: {integrity: sha512-9fJMTNFTWZMh5qwrBItuziu834eOCUcEqymSH7pY+zoMVEZg3gcPuBNxH1EvfVYe9h0x/Ptw8KBzv7qxb7l8dg==}
     engines: {node: '>=18'}
@@ -1100,6 +1106,15 @@ packages:
     resolution: {integrity: sha512-AdmX6xUzdNASswsFtmwSt7Vj8po9IuqXm0UXz7QKPuEUmPB4XyjGfaAr2PSuELMwkRMVH1EpIkX5bTZGRB3eCA==}
     engines: {node: '>=10'}
 
+  cross-env@10.1.0:
+    resolution: {integrity: sha512-GsYosgnACZTADcmEyJctkJIoqAhHjttw7RsFrVoJNXbsWWqaq6Ym+7kZjq6mS45O0jij6vtiReppKQEtqWy6Dw==}
+    engines: {node: '>=20'}
+    hasBin: true
+
+  cross-spawn@7.0.6:
+    resolution: {integrity: sha512-uV2QOWP2nWzsy2aMp8aRibhi9dlzF5Hgh5SHaB9OiTGEyDTiJJyx0uy51QXdyWbtAHNua4XJzUKca3OzKUd3vA==}
+    engines: {node: '>= 8'}
+
   csstype@3.2.3:
     resolution: {integrity: sha512-z1HGKcYy2xA8AGQfwrn0PAy+PB7X/GSj3UVJW9qKyn43xWa+gl5nXmU4qqLMRzWVLFC8KusUX8T/0kCiOYpAIQ==}
 
@@ -1238,6 +1253,9 @@ packages:
     resolution: {integrity: sha512-UfoeMA6fIJ8wTYFEUjelnaGI67v6+N7qXJEvQuIGa99l4xsCruSYOVSQ0uPANn4dAzm8lkYPaKLrrijLq7x23w==}
     engines: {node: '>= 0.4'}
 
+  isexe@2.0.0:
+    resolution: {integrity: sha512-RHxMLp9lnKHGHRng9QFhRCMbYAcVpn69smSGcq3f36xjgVVWThj4qqLbTLlq7Ssj8B+fIQ1EuCEGI2lKsyQeIw==}
+
   js-tokens@4.0.0:
     resolution: {integrity: sha512-RdJUflcE3cUzKiMqQgsCu06FPu9UdIJO0beYbPhHN4k6apgJtifcoCtT9bcxOpYBtpD2kCM6Sbzg4CausW/PKQ==}
 
@@ -1349,6 +1367,10 @@ packages:
     resolution: {integrity: sha512-ayCKvm/phCGxOkYRSCM82iDwct8/EonSEgCSxWxD7ve6jHggsFl4fZVQBPRNgQoKiuV/odhFrGzQXZwbifC8Rg==}
     engines: {node: '>=8'}
 
+  path-key@3.1.1:
+    resolution: {integrity: sha512-ojmeN0qd+y0jszEtoY48r0Peq5dwMEkIlCOu6Q5f41lfkswXuKtYrhgoTpLnyIcHm24Uhqx+5Tqm2InSwLhE6Q==}
+    engines: {node: '>=8'}
+
   path-parse@1.0.7:
     resolution: {integrity: sha512-LDJzPVEEEPR+y48z93A0Ed0yXb8pAByGWo/k5YYdYgpY2/2EsOsksJrq7lOHxryrVOn1ejG6oAp8ahvOIQD8sw==}
 
@@ -1488,6 +1510,14 @@ packages:
   setprototypeof@1.2.0:
     resolution: {integrity: sha512-E5LDX7Wrp85Kil5bhZv46j8jOeboKq5JMmYM3gVGdGH8xFpPWXUMsNrlODCrkoxMEeNi/XZIwuRvY4XNwYMJpw==}
 
+  shebang-command@2.0.0:
+    resolution: {integrity: sha512-kHxr2zZpYtdmrN1qDjrrX/Z1rR1kG8Dx+gkpK1G4eXmvXswmcE1hTWBWYUzlraYw1/yZp6YuDY77YtvbN0dmDA==}
+    engines: {node: '>=8'}
+
+  shebang-regex@3.0.0:
+    resolution: {integrity: sha512-7++dFhtcx3353uBaq8DDR4NuxBetBzC7ZQOhmTQInHEd6bSrXdiEyzCvG07Z44UYdLShWUyXt5M/yhz8ekcb1A==}
+    engines: {node: '>=8'}
+
   sonic-boom@4.2.1:
     resolution: {integrity: sha512-w6AxtubXa2wTXAUsZMMWERrsIRAdrK0Sc+FUytWvYAhBJLyuI4llrMIC1DtlNSdI99EI86KZum2MMq3EAZlF9Q==}
 
@@ -1614,6 +1644,11 @@ packages:
     resolution: {integrity: sha512-De72GdQZzNTUBBChsXueQUnPKDkg/5A5zp7pFDuQAj5UFoENpiACU0wlCvzpAGnTkj++ihpKwKyYewn/XNUbKw==}
     engines: {node: '>=18'}
 
+  which@2.0.2:
+    resolution: {integrity: sha512-BLI3Tl1TW3Pvl70l3yq3Y64i+awpwXqsGBYWkkqMtnbXgrMD+yj7rhW0kuEDxzJaYXGjEW5ogapKNMEKNMjibA==}
+    engines: {node: '>= 8'}
+    hasBin: true
+
   ws@8.19.0:
     resolution: {integrity: sha512-blAT2mjOEIi0ZzruJfIhb3nps74PRWTCz1IjglWEEpQl5XS/UNama6u2/rjFkDDouqr4L67ry+1aGIALViWjDg==}
     engines: {node: '>=10.0.0'}
@@ -1918,6 +1953,8 @@ snapshots:
 
   '@emotion/weak-memoize@0.4.0': {}
 
+  '@epic-web/invariant@1.0.0': {}
+
   '@esbuild/aix-ppc64@0.27.3':
     optional: true
 
@@ -2970,6 +3007,17 @@ snapshots:
       path-type: 4.0.0
       yaml: 1.10.2
 
+  cross-env@10.1.0:
+    dependencies:
+      '@epic-web/invariant': 1.0.0
+      cross-spawn: 7.0.6
+
+  cross-spawn@7.0.6:
+    dependencies:
+      path-key: 3.1.1
+      shebang-command: 2.0.0
+      which: 2.0.2
+
   csstype@3.2.3: {}
 
   debug@4.4.3:
@@ -3128,6 +3176,8 @@ snapshots:
     dependencies:
       hasown: 2.0.2
 
+  isexe@2.0.0: {}
+
   js-tokens@4.0.0: {}
 
   jsesc@3.1.0: {}
@@ -3201,6 +3251,8 @@ snapshots:
       json-parse-even-better-errors: 2.3.1
       lines-and-columns: 1.2.4
 
+  path-key@3.1.1: {}
+
   path-parse@1.0.7: {}
 
   path-scurry@2.0.2:
@@ -3340,6 +3392,12 @@ snapshots:
 
   setprototypeof@1.2.0: {}
 
+  shebang-command@2.0.0:
+    dependencies:
+      shebang-regex: 3.0.0
+
+  shebang-regex@3.0.0: {}
+
   sonic-boom@4.2.1:
     dependencies:
       atomic-sleep: 1.0.0
@@ -3420,6 +3478,10 @@ snapshots:
       tr46: 5.1.1
       webidl-conversions: 7.0.0
 
+  which@2.0.2:
+    dependencies:
+      isexe: 2.0.0
+
   ws@8.19.0: {}
 
   yallist@3.1.1: {}

src-core/src/db/search.rs

@@ -51,10 +51,11 @@ impl<'a> SearchDatabase<'a> {
         self.conn.execute_batch(&format!(
             "
             DELETE FROM {0}.terms;
-            DELETE FROM {0}.terms_ft;
+            DROP TABLE {0}.terms_ft;
         ",
             DBSCHEMA[DbChild::Search]
         ))?;
+        self.create_schema()?;
 
         Ok(())
     }

src-core/src/db/yomitan_writer.rs

@@ -1,4 +1,5 @@
 use blake3::hash;
+use enum_map::EnumMap;
 use rusqlite::{Connection, OptionalExtension, Result, Transaction, params};
 use serde::Serialize;
 use serde_json::Value;
@@ -61,6 +62,7 @@ pub struct YomitanZipImportResult {
 pub struct YomitanWriter {
     dir: PathBuf,
     conn: Connection,
+    is_db_attached: EnumMap<DbChild, bool>,
 }
 
 impl YomitanWriter {
@@ -78,7 +80,15 @@ impl YomitanWriter {
             ",
         )?;
 
-        Ok(Self { dir, conn })
+        Ok(Self {
+            dir,
+            conn,
+            is_db_attached: enum_map! {
+                DbChild::YomitanGlossary => false,
+                DbChild::Search => false,
+                _ => true
+            },
+        })
     }
 
     pub fn create_schema(
@@ -172,8 +182,8 @@ impl YomitanWriter {
         )?;
 
         self.create_materialized_views()?;
-        self.attach_db(DbChild::YomitanGlossary)?;
-        self.attach_db(DbChild::Search)?;
+        self.ensure_db_attached(DbChild::YomitanGlossary)?;
+        self.ensure_db_attached(DbChild::Search)?;
 
         let schema_version = "2026-03-08";
         let current_schema_version = {
@@ -334,7 +344,11 @@ impl YomitanWriter {
         Ok(())
     }
 
-    fn attach_db(&mut self, db_child: DbChild) -> Result<(), CJDicError> {
+    fn ensure_db_attached(&mut self, db_child: DbChild) -> Result<(), CJDicError> {
+        if self.is_db_attached[db_child] {
+            return Ok(());
+        }
+
         let dir = self.dir.clone();
         let path = if self.dir.is_absolute() {
             dir
@@ -371,6 +385,8 @@ impl YomitanWriter {
             _ => (),
         }
 
+        self.is_db_attached[db_child] = true;
+
         Ok(())
     }
 
@@ -506,7 +522,7 @@ impl YomitanWriter {
             }
         }
 
-        self.attach_db(DbChild::YomitanGlossary)?;
+        self.ensure_db_attached(DbChild::YomitanGlossary)?;
 
         {
             let tx = self.conn.transaction()?;
@@ -793,12 +809,30 @@ impl YomitanWriter {
         tokenizer: Tokenizer,
         progress_callback: impl Fn(YomitanProgress),
     ) -> Result<(), CJDicError> {
+        self.ensure_db_attached(DbChild::Search)?;
+
         let mut search_db = SearchDatabase::new(&mut self.conn);
+        search_db.create_schema()?;
         search_db.reset_db()?;
         search_db.regenerate_yomitan("main", tokenizer.clone(), &progress_callback)?;
 
         Ok(())
     }
+
+    pub fn check_search_db(&mut self) -> Result<bool, CJDicError> {
+        self.ensure_db_attached(DbChild::Search)?;
+
+        let is_filled = self.conn.query_row(
+            "
+                SELECT
+                    (SELECT COALESCE(MAX(id), 0) FROM search.terms) >=
+                    (SELECT COALESCE(MAX(id), 0) FROM terms)
+                ",
+            [],
+            |r| r.get::<_, bool>(0),
+        )?;
+        Ok(is_filled)
+    }
 }
 
 fn intern(

src-core/src/error.rs

@@ -1,4 +1,5 @@
 use std::{
+    backtrace::Backtrace,
     string::FromUtf8Error,
     sync::{MutexGuard, PoisonError},
 };
@@ -51,63 +52,72 @@ pub enum CJDicError {
 
 impl From<rusqlite::Error> for CJDicError {
     fn from(e: rusqlite::Error) -> Self {
-        eprintln!("{e:#}");
+        let bt = Backtrace::capture();
+        eprintln!("{e:#}\n{bt}");
         CJDicError::Database(e.to_string())
     }
 }
 
 impl From<serde_json::Error> for CJDicError {
     fn from(e: serde_json::Error) -> Self {
-        eprintln!("{e:#}");
+        let bt = Backtrace::capture();
+        eprintln!("{e:#}\n{bt}");
         CJDicError::Serialization(e.to_string())
     }
 }
 
 impl From<anyhow::Error> for CJDicError {
     fn from(e: anyhow::Error) -> Self {
-        eprintln!("{e:#}");
+        let bt = Backtrace::capture();
+        eprintln!("{e:#}\n{bt}");
         CJDicError::AnyhowError(e.to_string())
     }
 }
 
 impl From<std::io::Error> for CJDicError {
     fn from(e: std::io::Error) -> Self {
-        eprintln!("{e:#}");
+        let bt = Backtrace::capture();
+        eprintln!("{e:#}\n{bt}");
         CJDicError::IOError(e.to_string())
     }
 }
 
 impl From<ZipError> for CJDicError {
     fn from(e: ZipError) -> Self {
-        eprintln!("{e:#}");
+        let bt = Backtrace::capture();
+        eprintln!("{e:#}\n{bt}");
         CJDicError::ZipError(e.to_string())
     }
 }
 
 impl From<VibratoError> for CJDicError {
     fn from(e: VibratoError) -> Self {
-        eprintln!("{e:#}");
+        let bt = Backtrace::capture();
+        eprintln!("{e:#}\n{bt}");
         CJDicError::VibratoError(e.to_string())
     }
 }
 
 impl From<FromUtf8Error> for CJDicError {
     fn from(e: FromUtf8Error) -> Self {
-        eprintln!("{e:#}");
+        let bt = Backtrace::capture();
+        eprintln!("{e:#}\n{bt}");
         CJDicError::FromUtf8Error(e.to_string())
     }
 }
 
 impl From<PoisonError<MutexGuard<'_, Connection>>> for CJDicError {
     fn from(e: PoisonError<MutexGuard<'_, Connection>>) -> Self {
-        eprintln!("{e:#}");
+        let bt = Backtrace::capture();
+        eprintln!("{e:#}\n{bt}");
         CJDicError::ConnectionMutexGuardError(e.to_string())
     }
 }
 
 impl From<PoisonError<MutexGuard<'_, Tokenizer>>> for CJDicError {
     fn from(e: PoisonError<MutexGuard<'_, Tokenizer>>) -> Self {
-        eprintln!("{e:#}");
+        let bt = Backtrace::capture();
+        eprintln!("{e:#}\n{bt}");
         CJDicError::TokenizerMutexGuardError(e.to_string())
     }
 }

src-core/src/service.rs

@@ -40,10 +40,10 @@ pub struct AppService {
 impl AppService {
     pub fn new(
         db_dir: impl AsRef<Path>,
-        vibrato_dict: impl AsRef<Path>,
+        vibrato_dic: impl AsRef<Path>,
     ) -> Result<Self, CJDicError> {
         let db = Database::new(db_dir)?;
-        let tokenizer = Tokenizer::new(vibrato_dict)?;
+        let tokenizer = Tokenizer::new(vibrato_dic)?;
         Ok(Self { db, tokenizer })
     }
 
@@ -174,6 +174,10 @@ impl AppService {
                     to_be_removed_dicts.push(z.to_string());
                 }
             }
+        } else {
+            for z in dir_zip_map.keys() {
+                new_dicts.push(z.to_string());
+            }
         }
 
         // Import ordering
@@ -202,15 +206,20 @@ impl AppService {
 
         {
             let mut writer = YomitanWriter::new(self.db.dir.clone())?;
-
             for z in new_dicts.clone().iter() {
                 if let Some(zip_file) = dir_zip_map.get(z) {
                     Self::import_yomitan_zip_file(&mut writer, *zip_file, lang, &import_callback)?;
                 }
             }
+        }
 
+        {
+            let mut writer = YomitanWriter::new(self.db.dir.clone())?;
+
+            if new_dicts.len() + to_be_removed_dicts.len() > 0 || !writer.check_search_db()? {
                 writer.make_search_db(self.tokenizer.clone(), &import_callback)?;
             }
+        }
 
         Ok(LoadYomitanZipDirResult {
             new_dicts,

src-core/src/tokenizer.rs

@@ -26,9 +26,8 @@ pub struct Tokenizer {
 }
 
 impl Tokenizer {
-    pub fn new(vibrato_dict: impl AsRef<Path>) -> Result<Self, CJDicError> {
-        let file = BufReader::new(File::open(vibrato_dict)?);
-        let reader = zstd::Decoder::new(file)?;
+    pub fn new(vibrato_dic: impl AsRef<Path>) -> Result<Self, CJDicError> {
+        let reader = BufReader::new(File::open(vibrato_dic)?);
         let dictionary = vibrato_rkyv::Dictionary::read(reader)?;
         Ok(Self {
             ja_tokenizer: vibrato_rkyv::Tokenizer::new(dictionary),

src-tauri/Cargo.toml

@@ -29,3 +29,4 @@ serde = "1.0.228"
 zip = "8.1.0"
 tokio = { version = "1.50.0", features = ["io-util"] }
 tauri-plugin-clipboard-manager = "2"
+zstd = "0.13.3"

src-tauri/src/lib.rs

@@ -15,35 +15,39 @@ pub fn run() {
         .plugin(tauri_plugin_opener::init())
         .plugin(tauri_plugin_clipboard_manager::init())
         .setup(|app| {
-            let app_dir = app.path().app_config_dir()?;
-            create_dir_all(&app_dir)?;
+            let config_dir = app.path().app_config_dir()?;
+            create_dir_all(&config_dir)?;
 
-            let dict_path = {
-                // Resolve the resource path (returns asset://localhost/ URI on Android)
-                let resource_path = app.path().resolve(
+            let data_dir = app.path().app_data_dir()?;
+            create_dir_all(&data_dir.join("yomitan/ja"))?;
+
+            let cache_dir = app.path().app_cache_dir()?;
+            let vibrato_dic_dir = cache_dir.join("vibrato");
+            create_dir_all(&vibrato_dic_dir)?;
+
+            println!("{:?}", vibrato_dic_dir);
+
+            let vibrato_dic_path = vibrato_dic_dir.join("system.dic");
+            if !vibrato_dic_path.exists() {
+                let zst_path = app.path().resolve(
                     "resources/mecab-ipadic/system.dic.zst",
                     tauri::path::BaseDirectory::Resource,
                 )?;
 
                 // Use Tauri's fs abstraction — works on both Android and desktop
-                let bytes = app.fs().read(&resource_path)?;
+                let bytes = app.fs().read(&zst_path)?;
 
-                // Write to app's cache dir, which IS a real writable filesystem path on Android
-                let cache_dir = app.path().app_cache_dir()?.join("vibrato");
-                create_dir_all(&cache_dir)?;
-                let dict_path = cache_dir.join("system.dic.zst");
-                fs::write(&dict_path, &bytes)?;
+                let mut decoder = zstd::Decoder::new(bytes.as_slice())?;
+                let mut out = fs::File::create(&vibrato_dic_path)?;
+                std::io::copy(&mut decoder, &mut out)?;
+            }
 
-                dict_path
-            };
+            println!("{:?}", vibrato_dic_path);
 
-            // db_path is app_dir;
-            let service = AppService::new(&app_dir, &dict_path)?;
+            // db_path is at config_dir;
+            let service = AppService::new(&config_dir, &vibrato_dic_path)?;
             app.manage(service);
 
-            let app_data_dir = app.path().app_data_dir()?;
-            create_dir_all(&app_data_dir.join("yomitan/ja"))?;
-
             Ok(())
         })
         .invoke_handler(tauri::generate_handler![