import Database from "better-sqlite3";
import { mkdtempSync, rmSync } from "node:fs";
import { tmpdir } from "node:os";
import { join } from "node:path";
import { afterEach, describe, expect, it } from "vitest";
import { DatabaseService } from "./database.service.js";

const previousDatabasePath = process.env.DATABASE_PATH;
const previousStorageDir = process.env.STORAGE_DIR;
const tempDirs: string[] = [];

afterEach(() => {
  process.env.DATABASE_PATH = previousDatabasePath;
  process.env.STORAGE_DIR = previousStorageDir;
  for (const dir of tempDirs.splice(0)) {
    rmSync(dir, { recursive: true, force: true });
  }
});

describe("database migrations", () => {
  it("adds metadata columns to an existing comic-capable books table before creating dependent indexes", () => {
    const dir = mkdtempSync(join(tmpdir(), "readabook-migration-"));
    tempDirs.push(dir);
    const databasePath = join(dir, "readabook.sqlite");
    const storageDir = join(dir, "storage");

    const legacy = new Database(databasePath);
    legacy.exec(`
      CREATE TABLE users (
        id INTEGER PRIMARY KEY AUTOINCREMENT,
        email TEXT NOT NULL UNIQUE,
        name TEXT,
        password_hash TEXT NOT NULL,
        role TEXT NOT NULL DEFAULT 'user' CHECK (role IN ('admin','user')),
        created_at TEXT NOT NULL,
        updated_at TEXT NOT NULL
      );

      CREATE TABLE libraries (
        id INTEGER PRIMARY KEY AUTOINCREMENT,
        name TEXT NOT NULL,
        path TEXT NOT NULL,
        enabled INTEGER NOT NULL DEFAULT 1,
        created_at TEXT NOT NULL,
        updated_at TEXT NOT NULL
      );

      CREATE TABLE books (
        id INTEGER PRIMARY KEY AUTOINCREMENT,
        library_id INTEGER NOT NULL REFERENCES libraries(id) ON DELETE CASCADE,
        title TEXT NOT NULL,
        author TEXT,
        description TEXT,
        isbn TEXT,
        language TEXT,
        publisher TEXT,
        published_date TEXT,
        format TEXT NOT NULL CHECK (format IN ('epub','pdf','cbz','cbr')),
        file_path TEXT NOT NULL UNIQUE,
        cover_path TEXT,
        file_size INTEGER NOT NULL,
        file_mtime TEXT NOT NULL,
        created_at TEXT NOT NULL,
        updated_at TEXT NOT NULL
      );

      CREATE TABLE progress (
        id INTEGER PRIMARY KEY AUTOINCREMENT,
        user_id INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
        book_id INTEGER NOT NULL REFERENCES books(id) ON DELETE CASCADE,
        locator TEXT NOT NULL,
        percent INTEGER NOT NULL CHECK (percent >= 0 AND percent <= 100),
        created_at TEXT NOT NULL,
        updated_at TEXT NOT NULL,
        UNIQUE(user_id, book_id)
      );

      CREATE TABLE jobs (
        id INTEGER PRIMARY KEY AUTOINCREMENT,
        type TEXT NOT NULL,
        status TEXT NOT NULL CHECK (status IN ('queued','running','succeeded','failed')),
        detail TEXT,
        error TEXT,
        created_at TEXT NOT NULL,
        updated_at TEXT NOT NULL
      );
    `);
    legacy.close();

    process.env.DATABASE_PATH = databasePath;
    process.env.STORAGE_DIR = storageDir;

    const database = new DatabaseService();
    const bookColumns = database.sqlite.prepare("PRAGMA table_info(books)").all() as Array<{ name: string }>;
    const bookIndexes = database.sqlite.prepare("PRAGMA index_list(books)").all() as Array<{ name: string }>;
    const metadataSources = database.sqlite.prepare("SELECT provider FROM metadata_source_config ORDER BY priority").all() as Array<{ provider: string }>;
    const automationSettings = database.sqlite.prepare("SELECT id, isbn_priority_enabled FROM automation_settings").get() as
      | { id: number; isbn_priority_enabled: number }
      | undefined;

    expect(bookColumns.map((column) => column.name)).toContain("isbn13");
    expect(bookColumns.map((column) => column.name)).toContain("identifiers_json");
    expect(bookIndexes.map((index) => index.name)).toContain("books_isbn13_idx");
    expect(metadataSources.map((source) => source.provider)).toEqual(["local", "openlibrary", "googlebooks", "bnf"]);
    expect(automationSettings).toMatchObject({ id: 1, isbn_priority_enabled: 1 });

    database.onModuleDestroy();
  });
});