// Upload an AAB (or reuse an uploaded versionCode) and put it on one or more tracks in one edit, with the "What's new"
// of every listing language as release notes.
//   storebound play release app-release.aab [--internal completed] [--production draft] [--name "1.0.0 (3)"] [--dry]
//   storebound play release --version-code 3 --production draft
//   storebound play release app.aab --production completed --not-sent-for-review   (commit with changesNotSentForReview=true)
// Tracks: internal, alpha (closed), beta (open), production; status completed | draft | inProgress | halted.
// Without a track flag: internal, completed. A production release that is not a draft asks for confirmation.
// Draft app (never published): Play only accepts status "draft" on any track; the first production release is sent
// from the Console (see the play-first-release skill).
import { readFileSync, statSync } from 'node:fs';
import type { Ctx } from '../lib/ctx';
import { confirm, need } from '../lib/ctx';
import { done, log, warn } from '../lib/log';
import { aabInfo } from '../lib/gradle';
import { playClient } from './client';
import { usedVersionCodes } from './next-version-code';
import { readPlayCopy, refusePlayNotes } from './listing';

const TRACKS = ['internal', 'alpha', 'beta', 'production'];

export interface PlayTrackRelease { versionCodes?: string[]; status?: string; userFraction?: number; name?: string; releaseNotes?: { language: string; text: string }[] }

/** The track holds exactly this release already (one release, same codes, status, fraction, name and notes): a PUT
 *  would change nothing. Pure. */
export function sameRelease(cur: PlayTrackRelease[], want: PlayTrackRelease): boolean {
  if (cur.length !== 1) return false;
  const c = cur[0]!;
  const notes = (n?: { language: string; text: string }[]) => JSON.stringify([...(n ?? [])].sort((x, y) => x.language.localeCompare(y.language)).map(x => [x.language, x.text.trim()]));
  return (c.versionCodes ?? []).map(String).join() === (want.versionCodes ?? []).join() && c.status === want.status
    && (want.userFraction === undefined || Math.abs((c.userFraction ?? -1) - want.userFraction) < 1e-9)
    && (want.name === undefined || c.name === want.name)
    && (want.releaseNotes === undefined || notes(c.releaseNotes) === notes(want.releaseNotes));
}
const STATUSES = ['completed', 'draft', 'inProgress', 'halted'];

export async function run(ctx: Ctx): Promise<void> {
  const { config, root } = ctx.loaded;
  const pkg = need(config.play?.packageName, 'play.packageName');
  const a = ctx.args;
  const aab = a._.find(x => x.endsWith('.aab'));
  const fixed = a.get('version-code');
  if (!aab && !fixed) throw new Error('usage: play release <app.aab> | --version-code N [--internal completed] [--production draft] [--name text] [--not-sent-for-review] [--dry]');
  const tracks = TRACKS.filter(t => a.has(t)).map(t => ({ track: t, status: a.get(t) === 'true' ? 'draft' : a.get(t)! }));
  if (!tracks.length) tracks.push({ track: 'internal', status: 'completed' });
  for (const t of tracks) if (!STATUSES.includes(t.status)) throw new Error(`--${t.track}: status must be one of ${STATUSES.join(', ')}`);
  const fraction = a.get('fraction');
  const live = tracks.find(t => t.track === 'production' && t.status !== 'draft');
  const notes = readPlayCopy(ctx).filter(c => c.whatsNew).map(c => ({ language: c.lang, text: c.whatsNew }));
  refusePlayNotes(ctx, notes, `play release notes${a.has('dry') ? ' (dry run)' : ''}`);
  if (live && !a.has('dry') && !(await confirm(ctx, `Release to PRODUCTION as "${live.status}" (public once Google approves)?`))) return;

  const play = await playClient(root, pkg);
  try {
    await play.edit(async (id, ctl) => {
      let code = fixed ?? '';
      let uploaded = false;
      if (aab) {
        // a versionCode Play already has (an earlier run uploaded it) is reused, never uploaded twice
        const info = aabInfo(aab);
        if ((await usedVersionCodes(play, id)).includes(info.versionCode)) {
          code = String(info.versionCode);
          log('play', `versionCode ${code} is on Play already: not uploaded again`);
        } else {
          log('play', `uploading ${aab} (${(statSync(aab).size / 1048576).toFixed(1)} MB), this can take minutes`);
          const b = await play.call<{ versionCode: number }>('POST', `${play.UPLOAD}/edits/${id}/bundles?uploadType=media`,
            new Uint8Array(readFileSync(aab)), { 'Content-Type': 'application/octet-stream' });
          code = String(b.versionCode);
          uploaded = true;
          log('play', `uploaded versionCode ${code}`);
        }
      }
      let changed = 0;
      for (const t of tracks) {
        const release: PlayTrackRelease = { versionCodes: [code], status: t.status };
        if (notes.length) release.releaseNotes = notes;
        if (a.get('name')) release.name = a.get('name');
        if (t.status === 'inProgress') release.userFraction = Number(fraction ?? 0.1);
        const cur = (await play.call<{ releases?: PlayTrackRelease[] }>('GET', `${play.API}/edits/${id}/tracks/${t.track}`).catch(() => ({ releases: [] }))).releases ?? [];
        if (sameRelease(cur, release)) { log('play', `${t.track}: already ${t.status} ${code}, unchanged`); continue; }
        await play.call('PUT', `${play.API}/edits/${id}/tracks/${t.track}`, { track: t.track, releases: [release] });
        changed++;
        log('play', `${t.track} <- ${code} (${t.status}, notes in ${notes.length} languages)`);
      }
      if (!changed && !uploaded) ctl.unchanged();
    }, { dry: a.has('dry'), retries: aab ? 0 : 3, notSentForReview: a.has('not-sent-for-review'),
      summary: `release ${a.get('name') ?? (aab ?? `versionCode ${fixed}`)}: ${tracks.map(t => `${t.track} ${t.status}`).join(', ')}` });
  } catch (e) {
    if (/draft app|status draft/i.test(String(e)))
      throw new Error(`${(e as Error).message}\n\nThis app has never been published: the API may only create DRAFT releases. Re-run with --production draft, then send it from the Console (skill play-first-release).`);
    throw e;
  }
  const prod = tracks.find(t => t.track === 'production');
  if (prod) {
    // Play's default: an approved release goes live by itself (managed publishing is a console-only setting)
    if (config.play?.managedPublishing !== true) warn('play', `managed publishing is ${config.play?.managedPublishing === false ? 'off' : 'off by default (play.managedPublishing not set)'}: the release goes live automatically once Google approves it`);
    if (prod.status === 'draft') log('play', 'next: `storebound console plan play-production-countries` (the API cannot set countries), then `storebound console plan play-production-release` (its final "Send changes for review" is the owner\'s)');
  }
  done('play', 'release done');
}