flowchart LR
    Trader["Trader Browser / Vue SPA"] --> Nginx["Nginx HTTPS"]
    Admin["Admin Browser / Admin SPA"] --> Nginx

    Nginx --> PHP["Laravel PHP-FPM"]

    PHP --> MySQL["MySQL"]
    PHP --> Redis["Redis"]
    PHP --> Payments["Payment Providers"]
    PHP --> OAuth["Google / Facebook OAuth"]
    PHP --> Twilio["Twilio"]

    Parser["quotes-parser worker"] --> TradingView["TradingView WebSocket"]
    Parser --> MySQL
    Parser --> Redis

    Checker["order-checks worker"] --> MySQL
    Checker --> Redis

    Scheduler["scheduler worker"] --> MySQL
    Scheduler --> Redis

    Redis --> Echo["Laravel Echo Server"]
    Echo --> Trader
    Echo --> Admin

flowchart TB
    subgraph Web["HTTP Runtime"]
        Routes["Routes and middleware"]
        Controllers["Thin controllers"]
        Services["Domain services"]
        Models["Eloquent models"]
    end

    subgraph Workers["Long-Running Workers"]
        Quotes["tradingview:start"]
        Orders["check:orders"]
        Cron["schedule:work"]
    end

    subgraph Realtime["Realtime Layer"]
        Events["Broadcast events"]
        Redis["Redis"]
        Echo["Laravel Echo Server"]
    end

    subgraph Storage["Storage"]
        DB["MySQL"]
        Cache["Redis cache"]
    end

    Routes --> Controllers
    Controllers --> Services
    Services --> Models
    Models --> DB

    Quotes --> DB
    Orders --> DB
    Cron --> DB

    Services --> Events
    Orders --> Events
    Events --> Redis
    Redis --> Echo
    Echo --> UI["Vue clients"]

sequenceDiagram
    participant UI as Vue Trading UI
    participant API as TradingController
    participant Service as TradingService
    participant DB as MySQL
    participant Worker as Settlement Worker
    participant Echo as Echo Server

    UI->>API: POST /binary/buy
    API->>Service: buySymbolServ()
    Service->>DB: Validate symbol, market, tick and balance
    Service->>DB: Debit balance
    Service->>DB: Insert open order
    Service->>Echo: Broadcast balance update
    Service-->>UI: Return open order

    Worker->>DB: Select expired open orders
    Worker->>DB: Find tick before expiration
    Worker->>Worker: Calculate win, loss or refund
    Worker->>DB: Insert history and latest order
    Worker->>DB: Update balance and statistics
    Worker->>Echo: Broadcast close event
    Echo-->>UI: Update orders and balance

flowchart TD
    Start["Expired open order"] --> Tick["Find last tick before close_at"]
    Tick --> TickFound{"Tick found?"}
    TickFound -->|No| Refund["Refund stake"]
    TickFound -->|Yes| Market["Check market status and quote heartbeat"]
    Market --> MarketOk{"Market data valid?"}
    MarketOk -->|No| Refund
    MarketOk -->|Yes| Direction{"Order direction"}

    Direction -->|Up| UpCheck{"close_price > open_price?"}
    Direction -->|Down| DownCheck{"close_price < open_price?"}

    UpCheck -->|Yes| Win["Profit = amount + payout"]
    UpCheck -->|No| Loss["Profit = 0"]
    DownCheck -->|Yes| Win
    DownCheck -->|No| Loss

    Refund --> Persist["Persist history"]
    Win --> Persist
    Loss --> Persist
    Persist --> Balance["Update balance"]
    Balance --> Stats["Update statistics"]
    Stats --> Event["Broadcast settlement event"]

flowchart LR
    Request["Trade Request"] --> Mode{"Mode"}

    Mode --> Real["Real"]
    Mode --> Demo["Demo"]
    Mode --> Contest["Tournament"]

    Real --> RealBalance["users.balance"]
    Real --> RealOpen["open_orders"]
    Real --> RealHistory["order_history_1"]

    Demo --> DemoBalance["users.demo_balance"]
    Demo --> DemoOpen["open_demo_orders"]
    Demo --> DemoHistory["order_demo_history_1"]

    Contest --> ContestBalance["contest_users.balance"]
    Contest --> ContestOpen["contest_open_orders"]
    Contest --> ContestHistory["contest_histories"]

flowchart LR
    Command["php artisan tradingview:start"] --> Parser["TradingViewWebsocketService"]
    Parser --> Socket["TradingView WebSocket"]
    Socket --> Sessions["Quote and status sessions"]
    Sessions --> Symbols["Symbols from database"]
    Symbols --> Subscribe["Subscribe to instruments"]
    Subscribe --> Packets["qsd packets"]
    Packets --> Ticks["ticks table"]
    Packets --> Status["market_statuses table"]
    Status --> TradingAPI["Trade validation"]
    Ticks --> Settlement["Settlement worker"]

flowchart TD
    Events["Laravel Broadcast Events"] --> Balance["ChangeBalance"]
    Events --> DemoBalance["ChangeDemoBalance"]
    Events --> ContestBalance["ChangeContestBalance"]
    Events --> CloseReal["CloseOptionEvent"]
    Events --> CloseDemo["CloseDemoOptionEvent"]
    Events --> CloseContest["CloseContestOptionEvent"]
    Events --> Symbols["ChangeSymbol"]

    Balance --> Ch1["private balance.{id}"]
    DemoBalance --> Ch2["private demo_balance.{id}"]
    ContestBalance --> Ch3["private contest_balance.{id}.{contest_id}"]
    CloseReal --> Ch4["private closed.{id}"]
    CloseDemo --> Ch5["private closed_demo.{id}"]
    CloseContest --> Ch6["private closed_contest.{id}.{contest_id}"]
    Symbols --> Ch7["public symbols"]

flowchart TD
    UI["Deposit UI"] --> Start["Start deposit"]
    Start --> Deposit["Create pending deposit"]
    Deposit --> Provider{"Provider"}

    Provider --> Qiwi["QIWI"]
    Provider --> YooMoney["YooMoney"]
    Provider --> Cryptonator["Cryptonator"]
    Provider --> Payeer["Payeer"]
    Provider --> FreeKassa["FreeKassa"]

    Qiwi --> Callback["Provider callback"]
    YooMoney --> Callback
    Cryptonator --> Callback
    Payeer --> Callback
    FreeKassa --> Callback

    Callback --> Verify["Signature and allowlist verification"]
    Verify --> Valid{"Valid?"}
    Valid -->|No| Reject["Reject"]
    Valid -->|Yes| Settle["processDepositServ"]
    Settle --> Credit["Credit balance"]
    Credit --> Bonus["Apply bonus and turnover"]
    Bonus --> Referral["Apply referral reward"]
    Referral --> Event["Broadcast balance"]

flowchart TD
    Admin["Admin creates tournament"] --> Planned["Planned"]
    Planned --> Active{"started_at < now < ended_at"}
    Active -->|No| Waiting["Waiting or ended"]
    Active -->|Yes| Register["User registers"]
    Register --> EntryFee["Debit real balance"]
    EntryFee --> ContestUser["Create contest_users balance"]
    ContestUser --> Trading["Tournament trading"]
    Trading --> Orders["contest_open_orders"]
    Orders --> Settlement["Shared settlement worker"]
    Settlement --> Ranking["contest:check ranking"]
    Ranking --> Rewards{"ended_at passed?"}
    Rewards -->|No| Leaderboard["Update leaderboard"]
    Rewards -->|Yes| Credit["Credit winner rewards"]