%%{init: {"theme":"forest","securityLevel":"loose","flowchart":{"curve":"linear","useMaxWidth":true,"nodeSpacing":40,"rankSpacing":50},"themeCSS":"svg { font-family: Inter, ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial; } .edgePath path { stroke-opacity:.6 } .ext > rect, .ext > polygon, .ext > path { stroke: #7e57c2; } .db > rect, .db > polygon, .db > path { fill: #e3f2fd; stroke: #1e88e5; } .svc > rect, .svc > polygon, .svc > path { fill: #e8f5e9; stroke: #43a047; } .fe > rect, .fe > polygon, .fe > path { fill: #fff8e1; stroke: #f9a825; } .ctrl > rect, .ctrl > polygon, .ctrl > path { fill: #f3e5f5; stroke: #8e24aa; } .mid > rect, .mid > polygon, .mid > path { fill: #e0f2f1; stroke: #00897b; } .model > rect, .model > polygon, .model > path { fill: #ede7f6; stroke: #5e35b1; } .route > rect, .route > polygon, .route > path { fill: #e8eaf6; stroke: #3f51b5; } .cluster rect { rx:8; ry:8 }" }}%%
flowchart TB

%% ========================= Docker & Runtime =========================
subgraph DOCKER["Docker Compose (Local Dev/Prod)"]
  direction TB
  docker_net([Bridge Network: fotbal-network]):::svc
  docker_vol1["Volume: postgres_data"]:::svc
  docker_vol2["Bind: ./uploads -> /app/uploads"]:::svc
  docker_vol3["Bind: ./cache -> /app/cache"]:::svc

  subgraph docker_backend["backend (Go) container"]
    direction TB
    be_8080["Expose 8080:8080"]
    be_env[".env + overrides"]
    be_cmd["command: ./main"]
  end

  subgraph docker_frontend["frontend (Nginx) container"]
    direction TB
    fe_3000["Expose 3000:80"]
    fe_env[".env.frontend"]
  end

  subgraph docker_db["postgres:15-alpine"]
    direction TB
    db_5432["Expose 5432:5432"]
    db_env["POSTGRES_* env"]
  end

  docker_net --- docker_backend
  docker_net --- docker_frontend
  docker_net --- docker_db
  docker_vol1 --- docker_db
  docker_vol2 --- docker_backend
  docker_vol3 --- docker_backend
end

user_browser((User Browser)):::ext
user_browser ==>|HTTP 80| fe_3000
user_browser -.->|dev direct :8080| be_8080

%% ========================= Backend (Go/Gin) =========================
subgraph BACKEND["Backend Service (Golang + Gin) :8080"]
  direction TB
  cfg["Config (internal/config.Config)<br/>- APP_ENV/PORT/DEBUG<br/>- DATABASE_URL (GORM)<br/>- JWT_SECRET/EXP<br/>- ALLOWED_ORIGINS (CORS)<br/>- UPLOAD_DIR/MAX_UPLOAD_SIZE<br/>- SMTP_* (Email)<br/>- FRONTEND_BASE_URL<br/>- PUBLIC_API_BASE_URL<br/>- ERROR_INGEST_URL/TOKEN<br/>- FACR_SCRAPER_BASE_URL<br/>- UMAMI_*<br/>- CLAMAV_* (optional)"]
  logger[Logger (pkg/logger)]
  db_init[[InitDB() + AutoMigrate()]]:::db
  email_svc[EmailService (pkg/email)]:::svc

  subgraph middleware[Middleware]
    direction TB
    mw_reqid[RequestID]
    mw_logger[RequestLogger]
    mw_recovery[CustomRecoveryWithReporter]
    mw_errstatus[ErrorStatusReporter]
    mw_sanitize[SanitizeHeaders]
    mw_dbctx[DBContext (req ctx timeout)]
    mw_size[RequestSizeLimit (2MB)]
    mw_ct[ValidateContentType]
    mw_csrf[CSRFProtection (protected)]
    mw_rate[RateLimit (per-route)]
    mw_sec[SecurityHeaders + AssetCacheControl]
  end

  prometheus["GET /metrics (promhttp)"]
  static1["Static: /uploads -> UPLOAD_DIR"]
  static2["Static: /cache -> ./cache"]
  static3["Static: /dist -> ./static"]
  static4["Static: /premium-assets -> ./pro"]

  subgraph router["Router"]
    direction TB
    api_grp["/api/v1"]:::route
    root_grp["/root/"]:::route
  end

  subgraph controllers[Controllers]
    direction TB
    c_auth["AuthController<br/>/login,/logout,/register,/me<br/>/password-reset"]
    c_contact["ContactController<br/>/contact + newsletter + admin forwarding"]
    c_pass[PasswordController]
    c_ai["AIController<br/>/ai/blog,/ai/about,/ai/css,/ai/instagram"]
    c_score["ScoreboardController<br/>/public + admin timer/sponsors/qr"]
    c_about[AboutController]
    c_gallery["GalleryController<br/>/Zonerama profile/albums/picks"]
    c_files["FilesController<br/>/list/unused/duplicates/usage<br/>/scan/refresh-tracking/delete"]
    c_notify[NotificationsController]
    c_email["EmailController<br/>/open.gif/click/unsubscribe/stats"]
    c_prefetch["PrefetchController<br/>/status/trigger"]
    c_seo["SEOController<br/>/seo (public) + robots.txt + sitemap"]
    c_nav["NavigationController<br/>/navigation + social-links + admin CRUD"]
    c_poll["PollController<br/>/public vote/results + admin"]
    c_sw["SweepstakesController<br/>/public current/visual + admin CRUD/finalize"]
    c_cloth["ClothingController<br/>/public + admin CRUD"]
    c_pec["PageElementConfigController<br/>/public + admin CRUD/batch"]
    c_article["ArticleController<br/>/create + match-link"]
    c_base["BaseController<br/>/health, uploads, categories, teams, players, matches, standings, zonerama, settings, shortlinks(public)"]
    c_myu["MyUIbrixController<br/>/validate,/preview,/optimize"]
    c_editor["EditorPreviewController<br/>/preview state + variants"]
    c_short["ShortLinkController<br/>/public create + admin + redirect /s/:code"]
    c_comment["CommentController<br/>/public list + CRUD + reactions<br/>ban/unban/report (admin)"]
    c_eng["EngagementController<br/>/rewards/leaderboard/profile/actions"]
    c_facr["FACRController<br/>/facr club search/info/table"]
    c_yt["YouTubeController<br/>/youtube/videos"]
    c_umami["UmamiController<br/>/config + admin initialize/stats"]
    c_error["ErrorController<br/>/errors ingest + admin + external"]
  end

  subgraph services[Services & Jobs]
    direction TB
    s_errrep[ErrorReporter]
    s_prefetch["Prefetcher<br/>StartPrefetcher(target)"]
    s_nlsched[NewsletterScheduler]
    s_nlauto["NewsletterAutomation<br/>weekly, reminders, results"]
    s_sweep[SweepstakesScheduler]
    s_umami[UmamiService]
    s_facr[FACRService]
    s_cache[CacheService]
    s_logo[LogoCache]
    s_filetrk[FileTracker]
    s_imgopt[ImageOptimizer]
    s_bad[BadWords/Spam]
    s_setup[SetupService]
  end

  subgraph models[Models (GORM)]
    direction LR
    m_settings[Settings]
    m_user[User]
    m_article[Article]
    m_scoreboard[ScoreboardState]
    m_compalias[CompetitionAlias]
    m_team[Team]
    m_player[Player]
    m_contact_cat[ContactCategory]
    m_contact[Contact]
    m_contact_msg[ContactMessage]
    m_news[NewsletterSubscription]
    m_sponsor[Sponsor]
    m_cloth[Clothing]
    m_poll[Poll + PollOption + PollVote]
    m_nav[NavigationItem + SocialLink]
    m_pageel[PageElementConfig]
    m_short[ShortLink + LinkClick]
    m_comment[Comment + Reaction + Ban + UnbanRequest + Report]
    m_profile[UserProfile]
    m_points[PointsTransaction]
    m_ach[Achievement + UserAchievement]
    m_reward[RewardItem + RewardRedemption]
    m_over[MatchOverride + TeamLogoOverride]
    m_sweep[Sweepstake + Prize + Entry + Winner]
    m_up[UploadedFile + FileUsage]
    m_error[ErrorEvent]
  end

  %% wiring inside backend
  cfg --> db_init
  cfg --> email_svc
  router --> middleware
  api_grp --> controllers
  root_grp --> c_seo
  root_grp --> c_short
  api_grp --> c_auth
  api_grp --> c_contact
  api_grp --> c_pass
  api_grp --> c_ai
  api_grp --> c_score
  api_grp --> c_about
  api_grp --> c_gallery
  api_grp --> c_files
  api_grp --> c_notify
  api_grp --> c_email
  api_grp --> c_prefetch
  api_grp --> c_seo
  api_grp --> c_nav
  api_grp --> c_poll
  api_grp --> c_sw
  api_grp --> c_cloth
  api_grp --> c_pec
  api_grp --> c_article
  api_grp --> c_base
  api_grp --> c_myu
  api_grp --> c_editor
  api_grp --> c_short
  api_grp --> c_comment
  api_grp --> c_eng
  api_grp --> c_facr
  api_grp --> c_yt
  api_grp --> c_umami
  api_grp --> c_error

  %% controllers -> models
  controllers -->|GORM| models
  db_init ==>|Postgres conn| DB["PostgreSQL :5432 / fotbal_club"]:::db
  models ==>|tables| DB

  %% services wiring
  s_prefetch -.->|GET public endpoints| api_grp
  s_nlsched --> s_nlauto
  s_nlauto --> email_svc
  s_sweep --> email_svc
  s_filetrk --> m_up
  s_imgopt --> m_up
  s_errrep --> c_error
  s_umami --> c_umami
  s_facr --> c_facr
  email_svc -->|SMTP| smtp[(SMTP Provider)]:::ext

  %% externals
  facr_ext["FACR Scraper :8081"]:::ext
  errors_ingest["Error Receiver: errors.tdvorak.dev/api/v1/errors or local :8083"]:::ext
  errors_admin["Error Review Admin UI/API: errors.tdvorak.dev"]:::ext
  umami_ext["Umami Analytics server"]:::ext

  s_facr <---> facr_ext
  s_errrep --> errors_ingest
  c_error <---> errors_admin
  s_umami <---> umami_ext

  %% static serving
  static1 --- user_browser
  static2 --- user_browser
  static3 --- user_browser
  static4 --- user_browser

  %% metrics
  prometheus --- user_browser
end

user_browser ==>|HTTP /api/v1| api_grp
user_browser ==>|HTTP /robots.txt, /sitemap.xml, /s/:code| root_grp

%% ========================= Frontend (React) =========================
subgraph FRONTEND[Frontend (React + ChakraUI)]
  direction TB
  fe_router[React Router (src/App.tsx)]:::fe

  subgraph fe_public[Public Pages]
    direction LR
    p_home[HomePage /]
    p_blog[BlogPage /blog]
    p_newslist[ArticlesListPage]
    p_article["ArticleDetailPage /news/:slug | /articles/:id"]
    p_about[AboutPage /o-klubu]
    p_club[ClubPage /klub]
    p_calendar[CalendarPage /kalendar]
    p_actcal[ActivitiesCalendarPage /aktivity]
    p_tables[TablesPage /tabulky]
    p_matches[MatchesPage /zapasy]
    p_match[MatchDetailPage /zapas/:id]
    p_players[PlayersPage /hraci]
    p_player[PlayerDetailPage /hraci/:id]
    p_sponsors[SponsorsPage /sponzori]
    p_contact[ContactPage /kontakt]
    p_gallery[GalleryPage /galerie]
    p_album[AlbumDetailPage /galerie/album/:id]
    p_videos[VideosPage /videa]
    p_clothing[ClothingPage /obleceni]
    p_polls[PollsPage /ankety]
    p_search[SearchPage /hledat]
    p_short[ShortRedirectPage /s/:code]
    p_over_sb[OverlayScoreboardPage /overlay/scoreboard]
    p_over_sp[OverlaySponsorsPage /overlay/sponsors]
    p_cookies[CookiePolicyPage]
    p_terms[TermsPage]
    p_privacy[PrivacyPolicyPage]
    p_notfound[NotFoundPage *]
  end

  subgraph fe_auth[Auth & Setup]
    direction LR
    p_login[AuthPage /login]
    p_register[RegisterPage /register]
    p_forgot[ForgotPasswordPage /forgot-password]
    p_reset[ResetPasswordPage /reset-password]
    p_setup[SetupPage /setup]
    p_style[StylePreviewPage /setup/styl]
    p_news_unsub[NewsletterUnsubscribePage]
    p_news_prefs[NewsletterPreferencesPage]
  end

  subgraph fe_admin[Admin Pages]
    direction LR
    a_dashboard[AdminDashboardPage]
    a_docs[AdminDocsPage]
    a_about[AboutAdminPage]
    a_videos[AdminVideosPage]
    a_gallery[GalleryAdminPage]
    a_merch[AdminMerchPage]
    a_sponsors[SponsorsAdminPage]
    a_matches[MatchesAdminPage]
    a_players[PlayersAdminPage]
    a_teams[TeamsAdminPage]
    a_users[UsersAdminPage]
    a_banners[BannersAdminPage]
    a_messages[MessagesAdminPage]
    a_settings[SettingsAdminPage]
    a_newsletter[NewsletterAdminPage]
    a_polls[PollsAdminPage]
    a_comp[CompetitionAliasesAdminPage]
    a_prefetch[PrefetchAdminPage]
    a_scoreboard[ScoreboardAdminPage]
    a_score_remote[MobileScoreboardControlPage]
    a_analytics[AnalyticsAdminPage]
    a_shortlinks[ShortlinksAdminPage]
    a_files[FilesAdminPage]
    a_contacts[ContactsAdminPage]
    a_navigation[NavigationAdminPage]
    a_comments[CommentsAdminPage]
    a_engagement[EngagementAdminPage]
    a_sweep[SweepstakesAdminPage]
    a_sweep_visual[SweepstakeVisualPage]
    a_adminreset[AdminResetPasswordPage]
  end

  %% FE -> BE API mappings (high level)
  fe_router -->|services/api.ts| api_grp
  p_blog -->|GET /articles| api_grp
  p_article -->|GET /articles/slug/:slug, /articles/:id<br/>POST /articles/:id/read| api_grp
  p_home -->|GET /articles/featured, /matches, /standings, /settings, /navigation| api_grp
  p_matches -->|GET /matches,/standings| api_grp
  p_match -->|GET /matches/:id| api_grp
  p_players -->|GET /players| api_grp
  p_player -->|GET /players/:id| api_grp
  p_gallery -->|GET /gallery/albums| api_grp
  p_album -->|GET /gallery/albums/:id| api_grp
  p_videos -->|GET /youtube/videos| api_grp
  p_clothing -->|GET /clothing| api_grp
  p_polls -->|GET /polls| api_grp
  p_contact -->|POST /contact| api_grp
  p_over_sb -->|GET /scoreboard (public)| api_grp
  p_over_sp -->|GET /scoreboard/sponsors| api_grp
  p_short -->|GET /s/:code (root)| root_grp

  %% Admin flows
  a_articles[ArticlesAdminPage] -->|POST/PUT/DELETE /articles<br/>/link-match| api_grp
  a_matches -->|GET /admin/matches| api_grp
  a_comments -->|GET/PATCH /admin/comments| api_grp
  a_navigation -->|CRUD /admin/navigation| api_grp
  a_files -->|GET/DELETE /admin/files| api_grp
  a_scoreboard -->|GET/PUT /admin/scoreboard + timer| api_grp
  a_score_remote -->|POST timer controls| api_grp
  a_newsletter -->|send/test/preview/status| api_grp
  a_sweep -->|CRUD /admin/sweepstakes| api_grp
  a_sweep_visual -->|GET /admin/sweepstakes/:id/visual| api_grp
  a_analytics -->|/admin/umami| api_grp

  %% FE error reporting & analytics
  fe_router -->|POST /errors (ErrorReporter)| api_grp
  fe_router -->|GET /umami/config| api_grp

end

%% ========================= Ports & CORS =========================
subgraph PORTS[Ports & CORS]
  direction LR
  port_be[Backend :8080]
  port_fe[Frontend :3000 -> :80]
  port_db[Postgres :5432]
  cors["CORS AllowedOrigins<br/>- http://localhost:3000<br/>- http://localhost:8080<br/>+ FrontendBaseURL origin<br/>+ * optional in dev"]
end
port_be --- docker_backend
port_fe --- docker_frontend
port_db --- docker_db
cors -. controls .- router

%% Legend
subgraph LEGEND[Legend]
  direction LR
  L1[External Service]:::ext
  L2[Database/Table]:::db
  L3[Service/Daemon]:::svc
  L4[Controller]:::ctrl
  L5[Middleware]:::mid
  L6[Model]:::model
  L7[Route Group]:::route
end