// .gitea/scripts/getLatestRunWithArtifacts.js
// Robust finder: uses only Gitea API (no GUI URLs).

const fs = require("fs");
const path = require("path");

const BASE   = process.env.GITEA_BASE_URL;  // e.g. https://code.bim-it.pl
const OWNER  = process.env.OWNER;           // e.g. mz
const REPO   = process.env.REPO;            // e.g. DiunaBI
const TOKEN  = process.env.GITEA_PAT;
const SCAN_LIMIT = Number(process.env.SCAN_LIMIT || "100");
const REQUIRED_ARTIFACTS = (process.env.REQUIRED_ARTIFACTS || "frontend,webapi")
    .split(",").map(s => s.trim()).filter(Boolean);

if (!BASE || !OWNER || !REPO) {
    console.error("Missing one of: GITEA_BASE_URL, OWNER, REPO"); process.exit(1);
}
if (!TOKEN) {
    console.error("Missing GITEA_PAT"); process.exit(1);
}

const cacheDir = path.join(".gitea", ".cache");
fs.mkdirSync(cacheDir, { recursive: true });

async function apiJSON(url) {
    const res = await fetch(url, { headers: { Authorization: `token ${TOKEN}` } });
    if (!res.ok) {
        const t = await res.text().catch(()=>"");
        throw new Error(`API ${res.status} for ${url}\n${t}`);
    }
    return res.json();
}

(async () => {
    // 1) Pobierz listę tasków (runs)
    const listUrl = `${BASE}/api/v1/repos/${OWNER}/${REPO}/actions/tasks?limit=${SCAN_LIMIT}`;
    const resp = await apiJSON(listUrl);

    // Gitea 1.24 może zwracać różne kształty – normalizujemy:
    const raw = Array.isArray(resp)
        ? resp
        : (resp.workflow_runs || resp.tasks || resp.data || []);
    if (!Array.isArray(raw) || raw.length === 0) {
        console.error("No runs returned by API."); process.exit(1);
    }

    // 2) Filtrujemy „successful”
    const isSuccess = (r) => {
        const s = (r.status || "").toLowerCase();        // "success" / "completed"
        const c = (r.conclusion || "").toLowerCase();    // "success" (czasem brak)
        return s === "success" || (s === "completed" && c === "success");
    };

    const candidates = raw
        .filter(r => r && (r.id != null))
        .sort((a, b) => (b.id ?? 0) - (a.id ?? 0))
        .filter(isSuccess);

    if (candidates.length === 0) {
        console.error("No successful runs found."); process.exit(1);
    }

    console.log(`Scanning ${candidates.length} successful runs for artifacts: ${REQUIRED_ARTIFACTS.join(", ")}`);

    // 3) Sprawdź artefakty przez API
    let pickedId = null;
    for (const r of candidates) {
        const runId = r.id;
        const artsUrl = `${BASE}/api/v1/repos/${OWNER}/${REPO}/actions/runs/${runId}/artifacts`;
        try {
            const arts = await apiJSON(artsUrl);
            const names = (Array.isArray(arts?.artifacts) ? arts.artifacts : arts || [])
                .map(a => a?.name)
                .filter(Boolean);
            const ok = REQUIRED_ARTIFACTS.every(req => names.includes(req));
            if (ok) { pickedId = runId; break; }
            console.log(`Run ${runId}: lacks required artifacts (has: ${names.join(", ") || "none"})`);
        } catch (e) {
            console.log(`Run ${runId}: cannot read artifacts via API -> ${e.message.split("\n")[0]}`);
        }
    }

    if (!pickedId) {
        console.error("No run exposes all required artifacts via API.");
        process.exit(1);
    }

    // 4) Zapisz outputy
    fs.writeFileSync(path.join(cacheDir, "run_id"), String(pickedId), "utf8");
    if (process.env.GITHUB_OUTPUT) {
        fs.appendFileSync(process.env.GITHUB_OUTPUT, `run_id=${pickedId}\n`);
    }
    console.log(`Picked run_id=${pickedId}`);
})().catch(err => {
    console.error(err.stack || err.message || String(err));
    process.exit(1);
});