botfights/server/src/db/migrate.ts

import Database from 'better-sqlite3'
import { join, dirname } from 'path'
import { fileURLToPath } from 'url'
import { mkdirSync } from 'fs'

const __dirname = dirname(fileURLToPath(import.meta.url))
const dataDir = join(__dirname, '..', '..', 'data')
mkdirSync(dataDir, { recursive: true })

const sqlite = new Database(join(dataDir, 'botfights.db'))
sqlite.pragma('journal_mode = WAL')
sqlite.pragma('foreign_keys = ON')

sqlite.exec(`
  CREATE TABLE IF NOT EXISTS bots (
    id TEXT PRIMARY KEY,
    name TEXT NOT NULL UNIQUE,
    webhook_url TEXT NOT NULL,
    avatar_seed TEXT NOT NULL,
    archetype TEXT NOT NULL DEFAULT 'standard',
    secret_hash TEXT NOT NULL,
    public_key TEXT,
    profile_pic_url TEXT,
    elo_rating REAL NOT NULL DEFAULT 1200,
    wins INTEGER NOT NULL DEFAULT 0,
    losses INTEGER NOT NULL DEFAULT 0,
    win_streak INTEGER NOT NULL DEFAULT 0,
    best_streak INTEGER NOT NULL DEFAULT 0,
    tier INTEGER NOT NULL DEFAULT 0,
    is_active INTEGER NOT NULL DEFAULT 1,
    created_at TEXT NOT NULL
  );

  CREATE TABLE IF NOT EXISTS fights (
    id TEXT PRIMARY KEY,
    bot_a_id TEXT NOT NULL REFERENCES bots(id),
    bot_b_id TEXT NOT NULL REFERENCES bots(id),
    arena TEXT NOT NULL,
    status TEXT NOT NULL DEFAULT 'scheduled',
    winner_id TEXT REFERENCES bots(id),
    bot_a_hp INTEGER NOT NULL DEFAULT 100,
    bot_b_hp INTEGER NOT NULL DEFAULT 100,
    total_rounds INTEGER NOT NULL DEFAULT 0,
    scheduled_at TEXT,
    started_at TEXT,
    ended_at TEXT,
    created_at TEXT NOT NULL
  );

  CREATE TABLE IF NOT EXISTS rounds (
    id TEXT PRIMARY KEY,
    fight_id TEXT NOT NULL REFERENCES fights(id),
    round_number INTEGER NOT NULL,
    challenge_type TEXT NOT NULL,
    challenge_data TEXT NOT NULL,
    bot_a_response TEXT,
    bot_a_time_ms INTEGER,
    bot_a_score REAL,
    bot_b_response TEXT,
    bot_b_time_ms INTEGER,
    bot_b_score REAL,
    winner_id TEXT REFERENCES bots(id),
    narration TEXT,
    created_at TEXT NOT NULL
  );
`)

// Migrations for existing databases
const migrations = [
  `ALTER TABLE bots ADD COLUMN archetype TEXT NOT NULL DEFAULT 'standard'`,
  `ALTER TABLE bots ADD COLUMN profile_pic_url TEXT`,
]

for (const sql of migrations) {
  try { sqlite.exec(sql) } catch { /* column already exists */ }
}

console.log('[botfights] database migrated')
sqlite.close()