import { db } from '../db/index.js';
import type { GameTelemetry } from '../../telemetry.js';

export function listTelemetry(): GameTelemetry[] {
    const rows = db().prepare(`SELECT t.payload FROM server_telemetry t JOIN servers s ON s.name = t.server
        WHERE s.destroyed_at IS NULL AND t.payload IS NOT NULL`).all() as Array<{ payload: string }>;
    return rows.map(row => JSON.parse(row.payload) as GameTelemetry);
}

export function saveTelemetry(report: GameTelemetry): void {
    db().prepare(`INSERT INTO server_telemetry (server, round, players, received_at, payload)
        VALUES (?, ?, ?, ?, ?) ON CONFLICT(server) DO UPDATE SET
        round = excluded.round, players = excluded.players, received_at = excluded.received_at, payload = excluded.payload`)
        .run(report.server, report.event === 'game_start' ? 0 : report.round, report.players.length, report.receivedAt, JSON.stringify(report));
    if (report.event === 'game_start') {
        db().prepare('UPDATE servers SET game_started_at = ?, game_ended_at = NULL WHERE name = ?').run(report.receivedAt, report.server);
    } else if (report.event === 'game_end') {
        db().prepare('UPDATE servers SET game_ended_at = ? WHERE name = ?').run(report.receivedAt, report.server);
        // Legacy betas also take match completion directly from the script.
        db().prepare(`UPDATE beta_servers SET match_seen_at = ? WHERE server = ? AND stage = 'awaiting-match'
            AND healthy_at <= ? AND beta_id IN (SELECT id FROM betas WHERE state = 'running')`)
            .run(report.receivedAt, report.server, report.receivedAt);
    }
}