improve tests, especially for navigation.

app/lib/__tests__/settings.spec.tsx

@@ -1,12 +1,13 @@
 import {describe, expect, beforeEach} from '@jest/globals';
 import {Settings} from '@/app/lib/settings';
-import { getDb } from '@/app/lib/db';
+import { getDb, migrateDb } from '@/app/lib/db';
 
 describe('Settings', () => {
     let settings: Settings;
 
     beforeEach(async () => {
         // Initialize your Settings class here with a fresh database instance
+        await migrateDb();
         const db = await getDb();
         if (!db) throw new Error("Could not get db");
         settings = new Settings(db);

app/lib/conversation.ts

@@ -31,11 +31,15 @@ export class Message {
     }
 }
 
+type conversation_event_t = "add_message" | "translation_done"
+type conversation_callback_t = (conversation : Conversation) => any;
+
 export class Conversation extends Array<Message> {
 
     public onAddMessage? : (conversation : Conversation) => any;
     public onTranslationDone? : (conversation : Conversation) => any;
 
+
     constructor (
         public translator : Translator,
         public host : Speaker,
@@ -44,6 +48,15 @@ export class Conversation extends Array<Message> {
         super();
     }
 
+    public on(event : conversation_event_t, callback : conversation_callback_t) {
+        if (event === "add_message") {
+            this.onAddMessage = callback;
+        }
+        if (event === "translation_done") {
+            this.onTranslationDone = callback;
+        }
+    }
+
     public addMessage(speaker : Speaker, text? : string) {
         this.push(new Message(this, speaker, text));
     }

app/lib/db.ts

@@ -1,40 +1,26 @@
-import * as SQLite from 'expo-sqlite';
+import * as SQLite from "expo-sqlite";
+import { MIGRATE_UP, MIGRATE_DOWN } from "./migrations";
 
-export const MIGRATE_UP = {
-    1: [
-        `CREATE TABLE IF NOT EXISTS settings (
-            host_language TEXT,
-            libretranslate_base_url TEXT,
-            ui_direction INTEGER
-        )`,
-    ],
-    2: [
-        `CREATE TABLE IF NOT EXISTS whisper_models (
-            model TEXT PRIMARY KEY,
-            bytes_done INTEGER,
-            bytes_total INTEGER,
-        )`,
-    ]
+export async function getDb() {
+  return await SQLite.openDatabaseAsync("translation_terrace");
 }
 
-export const MIGRATE_DOWN = {
-    1: [
-        `DROP TABLE IF EXISTS settings`
-    ],
-    2: [
-        `DROP TABLE IF EXISTS whisper_models`
-    ]
-}
 
-export async function getDb(migrationDirection : "up" | "down" = "up") {
-    const db = await SQLite.openDatabaseAsync('translation_terrace');
+export async function migrateDb(direction: "up" | "down" = "up") {
 
-    for (let [migration, statements] of Object.entries(MIGRATE_UP)) {
-        for (let statement of statements) {
-            console.log(statement)
-            await db.runAsync(statement);
-        }
+  const db = await getDb();
+
+  const m = direction === "up" ? MIGRATE_UP : MIGRATE_DOWN;
+
+  for (let [migration, statements] of Object.entries(m)) {
+    for (let statement of statements) {
+      console.log(statement);
+      try {
+        const result = await db.runAsync(statement);
+        console.log(result);
+      } catch (err) {
+        console.error(err);
+      }
     }
-
-    return db;
+  }
 }

app/lib/migrations.ts

@@ -0,0 +1,23 @@
+
+export const MIGRATE_UP = {
+    1: [
+      `CREATE TABLE IF NOT EXISTS settings (
+              host_language TEXT,
+              libretranslate_base_url TEXT,
+              ui_direction INTEGER,
+              whisper_model TEXT
+          )`,
+    ],
+    2: [
+      `CREATE TABLE IF NOT EXISTS whisper_models (
+              model TEXT PRIMARY KEY,
+              bytes_done INTEGER,
+              bytes_total INTEGER
+          )`,
+    ],
+  };
+  
+  export const MIGRATE_DOWN = {
+    1: [`DROP TABLE IF EXISTS settings`],
+    2: [`DROP TABLE IF EXISTS whisper_models`],
+  };

app/lib/settings.ts

@@ -8,7 +8,7 @@ export class Settings {
         "host_language",
         "libretranslate_base_url",
         'ui_direction',
-        "wisper_model",
+        "whisper_model",
     ]
 
     constructor(public db: SQLiteDatabase) {

app/lib/whisper.ts

@@ -1,5 +1,5 @@
 import { Platform } from "react-native";
-import FileSystem from "expo-file-system";
+import * as FileSystem from "expo-file-system";
 import { File, Paths } from 'expo-file-system/next';
 import { getDb } from "./db";
 
@@ -145,10 +145,13 @@ export async function downloadWhisperModel(
   }
 ) {
 
+  console.debug("Starting download of %s", whisper_model);
+
   if (!WHISPER_MODEL_DIR.exists) {
     await FileSystem.makeDirectoryAsync(WHISPER_MODEL_PATH, {
       intermediates: true,
-    })
+    });
+    console.debug("Created %s", WHISPER_MODEL_DIR);
   }
 
   const whisperTarget = getWhisperTarget(whisper_model);
@@ -179,6 +182,7 @@ export async function downloadWhisperModel(
         data.totalBytesWritten,
         data.totalBytesExpectedToWrite,
       ];
+      console.log("%s, %s of %s", whisper_model, data.totalBytesWritten, data.totalBytesExpectedToWrite);
       await db.runAsync(
         `INSERT OR REPLACE INTO whisper_models (model, bytes_done, bytes_remaining) VALUES (?, ?, ?)`,
         args
@@ -187,4 +191,4 @@ export async function downloadWhisperModel(
   );
 
   await resumable.downloadAsync();
-}
+}