/**
 * Publica el instalador NSIS en MinIO y actualiza latest.json, versions.json y DATA.txt.
 *
 * Uso:
 *   set MINIO_ACCESS_KEY=...
 *   set MINIO_SECRET_KEY=...
 *   npm run publish:minio
 *
 * Opcional:
 *   MINIO_ENDPOINT=https://s3.builker.xyz
 *   MINIO_BUCKET=apps-versions
 *   MINIO_PREFIX=IPSExtractor
 *   RELEASE_DATE=11/07/2026   (formato DATA.txt DD/MM/YYYY; default: fecha de hoy)
 */
import { createHash } from "node:crypto";
import { createReadStream, existsSync, readFileSync, statSync, writeFileSync } from "node:fs";
import { join } from "node:path";
import { S3Client, PutObjectCommand, GetObjectCommand } from "@aws-sdk/client-s3";
import { getReleaseDir, projectRoot } from "./release-dir.mjs";

const root = projectRoot;

/** Carga KEY=VALUE desde un archivo local (sin dependencia dotenv). */
function loadEnvFile(filePath) {
  if (!existsSync(filePath)) return;
  const text = readFileSync(filePath, "utf8");
  for (const line of text.split(/\r?\n/)) {
    const trimmed = line.trim();
    if (!trimmed || trimmed.startsWith("#")) continue;
    const eq = trimmed.indexOf("=");
    if (eq <= 0) continue;
    const key = trimmed.slice(0, eq).trim();
    let value = trimmed.slice(eq + 1).trim();
    if (
      (value.startsWith('"') && value.endsWith('"')) ||
      (value.startsWith("'") && value.endsWith("'"))
    ) {
      value = value.slice(1, -1);
    }
    if (!(key in process.env) || process.env[key] === "") {
      process.env[key] = value;
    }
  }
}

loadEnvFile(join(root, ".env.minio"));
loadEnvFile(join(root, ".env"));

const pkg = JSON.parse(readFileSync(join(root, "package.json"), "utf8"));
const version = pkg.version;
const endpoint = (process.env.MINIO_ENDPOINT || "https://s3.builker.xyz").replace(/\/$/, "");
const bucket = process.env.MINIO_BUCKET || "apps-versions";
const prefix = (process.env.MINIO_PREFIX || "IPSExtractor").replace(/^\/|\/$/g, "");
const accessKey = process.env.MINIO_ACCESS_KEY || process.env.AWS_ACCESS_KEY_ID;
const secretKey = process.env.MINIO_SECRET_KEY || process.env.AWS_SECRET_ACCESS_KEY;

if (!accessKey || !secretKey) {
  console.error(
    "Faltan credenciales. Define MINIO_ACCESS_KEY y MINIO_SECRET_KEY (o AWS_ACCESS_KEY_ID / AWS_SECRET_ACCESS_KEY).",
  );
  process.exit(1);
}

const setupName = `IPSExtractor-Desktop-${version}-Setup.exe`;
const releaseDir = getReleaseDir();
const setupPath = join(releaseDir, setupName);
if (!existsSync(setupPath)) {
  console.error(`No se encontró ${setupPath}. Ejecuta antes: npm run dist`);
  console.error(`(directorio de release: ${releaseDir})`);
  process.exit(1);
}

function todayDisplay() {
  const d = new Date();
  const dd = String(d.getDate()).padStart(2, "0");
  const mm = String(d.getMonth() + 1).padStart(2, "0");
  const yyyy = d.getFullYear();
  return `${dd}/${mm}/${yyyy}`;
}

function isoFromDisplay(display) {
  // DD/MM/YYYY → YYYY-MM-DD
  const m = String(display).trim().match(/^(\d{1,2})\/(\d{1,2})\/(\d{4})$/);
  if (!m) return null;
  const [, dd, mm, yyyy] = m;
  return `${yyyy}-${mm.padStart(2, "0")}-${dd.padStart(2, "0")}`;
}

function resolveReleaseDateDisplay() {
  // Prioridad: RELEASE_DATE explícita → fecha de hoy al publicar.
  if (process.env.RELEASE_DATE) return String(process.env.RELEASE_DATE).trim();
  return todayDisplay();
}

async function sha256File(filePath) {
  return new Promise((resolve, reject) => {
    const hash = createHash("sha256");
    const stream = createReadStream(filePath);
    stream.on("data", (chunk) => hash.update(chunk));
    stream.on("error", reject);
    stream.on("end", () => resolve(hash.digest("hex")));
  });
}

async function upload(client, key, body, contentType) {
  const payload = Buffer.isBuffer(body)
    ? body
    : typeof body === "string"
      ? Buffer.from(body, "utf8")
      : body;

  const params = {
    Bucket: bucket,
    Key: key,
    Body: payload,
    ContentType: contentType,
  };

  // MinIO exige Content-Length; con Body string/stream el SDK a veces no lo envía.
  if (Buffer.isBuffer(payload)) {
    params.ContentLength = payload.byteLength;
  } else if (typeof payload === "object" && payload && "path" in payload) {
    // ReadStream desde createReadStream(path)
    try {
      params.ContentLength = statSync(payload.path).size;
    } catch {
      /* ignore — el stream del .exe suele ir bien */
    }
  }

  await client.send(new PutObjectCommand(params));
  console.log(`  ↑ s3://${bucket}/${key}`);
}

function compareSemver(a, b) {
  const pa = String(a).replace(/^v/i, "").split(".").map((x) => Number.parseInt(x, 10) || 0);
  const pb = String(b).replace(/^v/i, "").split(".").map((x) => Number.parseInt(x, 10) || 0);
  const len = Math.max(pa.length, pb.length);
  for (let i = 0; i < len; i++) {
    const x = pa[i] ?? 0;
    const y = pb[i] ?? 0;
    if (x < y) return -1;
    if (x > y) return 1;
  }
  return 0;
}

async function streamToString(body) {
  if (!body) return "";
  if (typeof body.transformToString === "function") return body.transformToString();
  const chunks = [];
  for await (const chunk of body) chunks.push(chunk);
  return Buffer.concat(chunks).toString("utf8");
}

/** Lee versions.json existente del bucket (o [] si no existe). */
async function loadExistingVersions(client) {
  try {
    const res = await client.send(
      new GetObjectCommand({ Bucket: bucket, Key: `${prefix}/versions.json` }),
    );
    const text = await streamToString(res.Body);
    const parsed = JSON.parse(text);
    return Array.isArray(parsed?.versions) ? parsed.versions : [];
  } catch (err) {
    const code = err?.name || err?.Code || err?.$metadata?.httpStatusCode;
    if (code === "NoSuchKey" || code === 404 || err?.$metadata?.httpStatusCode === 404) {
      return [];
    }
    console.warn("No se pudo leer versions.json previo:", err?.message || err);
    return [];
  }
}

async function main() {
  const releaseDateDisplay = resolveReleaseDateDisplay();
  const releaseDateIso = isoFromDisplay(releaseDateDisplay) || new Date().toISOString().slice(0, 10);
  const sha256 = await sha256File(setupPath);
  const { size } = statSync(setupPath);

  const publicBase = `${endpoint}/${bucket}/${prefix}`;
  const objectKeyExe = `${prefix}/${version}/${setupName}`;
  const objectKeyData = `${prefix}/${version}/DATA.txt`;
  const objectKeyLatest = `${prefix}/latest.json`;
  const objectKeyVersions = `${prefix}/versions.json`;
  const publicUrl = `${publicBase}/${version}/${setupName}`;

  const entry = {
    version,
    releaseDate: releaseDateIso,
    releaseDateDisplay,
    fileName: setupName,
    url: publicUrl,
    sha256,
    size,
  };

  // Actualiza version.json local para alinear la UI con la fecha publicada
  writeFileSync(
    join(root, "src/shared/version.json"),
    `${JSON.stringify({ releaseDate: releaseDateIso }, null, 2)}\n`,
    "utf8",
  );

  const client = new S3Client({
    region: process.env.MINIO_REGION || "us-east-1",
    endpoint,
    forcePathStyle: true,
    credentials: {
      accessKeyId: accessKey,
      secretAccessKey: secretKey,
    },
  });

  const existing = await loadExistingVersions(client);
  const byVersion = new Map(existing.map((v) => [String(v.version), v]));
  byVersion.set(version, entry);
  const versions = [...byVersion.values()].sort((a, b) => compareSemver(b.version, a.version));

  console.log(`Publicando v${version} → ${endpoint}/${bucket}/${prefix}/`);
  await upload(client, objectKeyExe, createReadStream(setupPath), "application/octet-stream");
  // Re-upload metadata even if exe already exists (reintento tras fallo parcial).
  await upload(
    client,
    objectKeyData,
    Buffer.from(`${releaseDateDisplay}\n`, "utf8"),
    "text/plain; charset=utf-8",
  );
  await upload(
    client,
    objectKeyLatest,
    Buffer.from(`${JSON.stringify(entry, null, 2)}\n`, "utf8"),
    "application/json",
  );
  await upload(
    client,
    objectKeyVersions,
    Buffer.from(`${JSON.stringify({ versions }, null, 2)}\n`, "utf8"),
    "application/json",
  );

  console.log("\nListo.");
  console.log(`  latest.json:   ${publicBase}/latest.json`);
  console.log(`  versions.json: ${publicBase}/versions.json  (${versions.length} versiones)`);
  console.log(`  DATA.txt:      ${publicBase}/${version}/DATA.txt  → ${releaseDateDisplay}`);
  console.log(`  Setup:         ${publicUrl}`);
}

main().catch((err) => {
  console.error(err);
  process.exit(1);
});