import { json } from '@sveltejs/kit';
import { db } from '$lib/server/db/index.js';
import { getBeta, listBetaServers, listBetaScripts } from '$lib/server/fleet/beta.js';
import { getScript, getVersion } from '$lib/server/fleet/scripts.js';
import { testView } from '$lib/server/fleet/beta-tests.js';

function parseId(raw: string): number | null {
    const n = Number.parseInt(raw, 10);
    return Number.isFinite(n) ? n : null;
}

export async function GET({ params }: { params: { id: string } }) {
    const id = parseId(params.id);
    if (id === null) return json({ ok: false, error: 'bad id' }, { status: 400 });
    const beta = getBeta(id);
    if (!beta) return json({ ok: false, error: 'not found' }, { status: 404 });

    const scripts = listBetaScripts(id).map((bs) => {
        const script = getScript(bs.script_id);
        const version = getVersion(bs.script_version_id);
        return {
            id: bs.script_id,
            name: script?.name ?? '(deleted)',
            target_rel_path: script?.target_rel_path ?? '',
            kind: script?.kind ?? bs.kind ?? 'script',
            version: version
                ? { id: version.id, version: version.version, release_version: version.release_version, sha256: version.sha256 }
                : null
        };
    });
    const servers = listBetaServers(id);

    const events = db().prepare('SELECT id, created_at, message FROM beta_events WHERE beta_id = ? ORDER BY id').all(id);
    const rollout = db().prepare("SELECT id FROM deployments WHERE beta_id = ? AND action = 'promote' ORDER BY started_at DESC LIMIT 1").get(id) as { id: string } | undefined;
    const promotion = rollout ? { ...rollout,
        pending: (db().prepare("SELECT COUNT(*) n FROM deployment_servers WHERE deployment_id = ? AND restart_state NOT IN ('done','failed','cancelled')").get(rollout.id) as { n: number }).n,
        failed: (db().prepare("SELECT COUNT(*) n FROM deployment_servers WHERE deployment_id = ? AND restart_state = 'failed'").get(rollout.id) as { n: number }).n } : null;
    return json({ beta, scripts, servers, events, test: testView(id), promotion });
}