// Local store checks of the renders folder, before any upload:
//   storebound shots check [--lang en,tr] [--variants] [--json]
// Per image: pixel size for its store type (Apple: a listed size, portrait or landscape; Play screenshots: 320-3840 px,
// at most 2:1; feature graphic exactly 1024x500), no alpha (both stores), Play: JPEG or 24-bit PNG, 8 MB per screenshot.
// --variants also checks the A/B variant folders (<renders>/<variant>/<lang>/...).
// Per set: Play 2-8 phone screenshots, Apple 1-10 per display type, 13" iPad set when apple.ipad, feature graphic,
// Play 7" / 10" tablet sets only when play.tablets (default: tablet renders exist; optional on Play).
// Per app preview: 886x1920 / 1200x1600, H.264, <= 30 fps, 15-30 s, stereo AAC track, <= 500 MB, <= 3 per set.
// Text overflow flags come from the last `shots render` (report.json). Frames: with capture.source "folder" every frame
// the scenes use must exist with the right aspect. Local font files (shots.fonts paths) without a license note: warn.
// Exit 1 on any error (warnings do not fail).
import { existsSync, readdirSync, readFileSync } from 'node:fs';
import { join } from 'node:path';
import type { ShipConfig } from '../lib/config';
import type { Ctx } from '../lib/ctx';
import { log, printJson } from '../lib/log';
import { checkFrames, type FrameIssue } from './devices';
import { defaultSizes, frameDims, SIZES } from './lib';
import type { LocalIssue, RendersCheck } from '../lib/validate-rules';
import { allIssues, requiredSets, type RendersScan, resolvedTablets, scanRenders, storeOf } from './report';
import { imageInfo } from './spec';
import { fontsDirOf, readManifest } from './fonts';
import { localFontIssues } from './local-fonts';

/** Frame files the scenes (and the feature graphic) use, per language and device class. */
export function framesNeeded(config: ShipConfig, langs: string[], tablets?: boolean): { lang: string; device: 'phone' | 'tablet'; name: string }[] {
  const shots = config.shots!;
  const sizes = defaultSizes(config, tablets);
  const devices: ('phone' | 'tablet')[] = ['phone', ...(sizes.some(s => SIZES[s]!.device === 'tablet') ? ['tablet' as const] : [])];
  const scene = [...new Set(shots.scenes.flatMap(s => s.frames.map(f => f.src)))];
  const phone = [...new Set([...scene, ...(shots.feature?.frame && sizes.includes('feature') ? [shots.feature.frame] : [])])];
  return langs.flatMap(lang => devices.flatMap(device => (device === 'phone' ? phone : scene).map(name => ({ lang, device, name }))));
}

export function checkFrameFolder(config: ShipConfig, dir: string, langs: string[], tablets?: boolean): FrameIssue[] {
  const found = new Map<string, { w: number; h: number }>();
  for (const lang of langs) for (const device of ['phone', 'tablet']) {
    const d = join(dir, lang, device);
    if (!existsSync(d)) continue;
    for (const f of readdirSync(d).filter(x => /\.png$/i.test(x))) { const i = imageInfo(readFileSync(join(d, f))); found.set(`${lang}/${device}/${f}`, i); }
  }
  return checkFrames(found, framesNeeded(config, langs, tablets), frameDims(config));
}

export function scanProject(ctx: Ctx): RendersScan {
  const { config, resolve } = ctx.loaded;
  const langs = ctx.args.list('lang').length ? ctx.args.list('lang') : config.languages.map(l => l.id);
  const dir = resolve(ctx.args.get('src') ?? config.renders ?? config.shots?.out ?? 'store/renders');
  const tablets = resolvedTablets(config, dir);
  return scanRenders(dir, { langs, variants: ctx.args.has('variants') ? Object.keys(config.shots?.variants ?? {}) : [], required: lang => requiredSets(config, lang, tablets) });
}

/** Local renders check split per store, for `validate` (base renders only, no variants). null = no renders folder. */
export function rendersCheck(config: ShipConfig, dir: string): Record<'apple' | 'play', RendersCheck> | null {
  if (!existsSync(dir)) return null;
  const langs = config.languages.map(l => l.id);
  const tablets = resolvedTablets(config, dir);
  const scan = scanRenders(dir, { langs, required: lang => requiredSets(config, lang, tablets) });
  const out = { apple: { dir, images: 0, issues: [] as LocalIssue[] }, play: { dir, images: 0, issues: [] as LocalIssue[] } };
  for (const img of scan.images) out[storeOf(img.rel)].images++;
  for (const v of scan.videos) out[storeOf(v.rel)].images++;
  for (const { where, issue } of allIssues(scan)) out[storeOf(where)].issues.push({ where, level: issue.level, code: issue.code, msg: issue.msg });
  return out;
}

export async function run(ctx: Ctx): Promise<void> {
  const { config, resolve, root } = ctx.loaded;
  const scan = scanProject(ctx);
  const issues = [...allIssues(scan), ...localFontIssues(readManifest(fontsDirOf(root))).map(issue => ({ where: '.storebound/fonts/fonts.json', issue }))];
  const cap = config.shots?.capture;
  const tablets = resolvedTablets(config, resolve(ctx.args.get('src') ?? config.renders ?? config.shots?.out ?? 'store/renders'));
  const frameIssues = cap?.source === 'folder' ? checkFrameFolder(config, resolve(cap.folder ?? config.shots!.frames), scan.langs, tablets) : [];
  if (ctx.args.has('json')) {
    printJson({ images: scan.images.length, videos: scan.videos.length, issues, frames: frameIssues });
  } else {
    for (const { where, issue } of issues) console.log(`${issue.level === 'error' ? 'ERROR' : 'warn '} ${where}: ${issue.msg}`);
    for (const f of frameIssues) console.log(`ERROR frames/${f.file}: ${f.msg}`);
  }
  const errors = issues.filter(i => i.issue.level === 'error').length + frameIssues.length;
  log('shots', `checked ${scan.images.length} images, ${scan.videos.length} videos, ${scan.sets.length} sets: ${errors} errors, ${issues.length - issues.filter(i => i.issue.level === 'error').length} warnings`);
  if (errors) process.exitCode = 1;
}