import Database from "better-sqlite3";
import { fileURLToPath } from "url";
import path from "path";
import fs from "fs";

const __dirname = path.dirname(fileURLToPath(import.meta.url));
const DATA_DIR = path.join(__dirname, "data");
fs.mkdirSync(DATA_DIR, { recursive: true });

const db = new Database(path.join(DATA_DIR, "spectre.db"));
db.pragma("journal_mode = WAL");

db.exec(`
  CREATE TABLE IF NOT EXISTS admins (
    id        INTEGER PRIMARY KEY AUTOINCREMENT,
    username  TEXT UNIQUE NOT NULL,
    pw_hash   TEXT NOT NULL,
    created   TEXT NOT NULL DEFAULT (datetime('now'))
  );

  CREATE TABLE IF NOT EXISTS ghosts (
    id        INTEGER PRIMARY KEY AUTOINCREMENT,
    name      TEXT NOT NULL,
    gif_file  TEXT NOT NULL,         -- filename under /uploads
    rarity    TEXT NOT NULL DEFAULT 'common',  -- common | rare | legendary
    scale     REAL NOT NULL DEFAULT 1.0,       -- billboard size multiplier
    enabled   INTEGER NOT NULL DEFAULT 1,
    created   TEXT NOT NULL DEFAULT (datetime('now'))
  );

  CREATE TABLE IF NOT EXISTS sets (
    id        INTEGER PRIMARY KEY AUTOINCREMENT,
    code      TEXT UNIQUE NOT NULL,  -- the QR payload that unlocks this set
    title     TEXT NOT NULL,
    enabled   INTEGER NOT NULL DEFAULT 1,
    created   TEXT NOT NULL DEFAULT (datetime('now'))
  );

  -- which ghosts a given set can spawn (many-to-many)
  CREATE TABLE IF NOT EXISTS set_ghosts (
    set_id    INTEGER NOT NULL REFERENCES sets(id) ON DELETE CASCADE,
    ghost_id  INTEGER NOT NULL REFERENCES ghosts(id) ON DELETE CASCADE,
    PRIMARY KEY (set_id, ghost_id)
  );
`);

export default db;