|
| 1 | +package main |
| 2 | + |
| 3 | +import ( |
| 4 | + "bufio" |
| 5 | + "encoding/csv" |
| 6 | + "encoding/json" |
| 7 | + "fmt" |
| 8 | + "gochatty/internal/auth" |
| 9 | + "gochatty/internal/chat" |
| 10 | + "gochatty/internal/db" |
| 11 | + "gochatty/internal/models" |
| 12 | + "gochatty/internal/mq" |
| 13 | + "gochatty/internal/websocket" |
| 14 | + "io" |
| 15 | + "log" |
| 16 | + "net/http" |
| 17 | + "os" |
| 18 | + "strings" |
| 19 | + "time" |
| 20 | + |
| 21 | + "github.com/gin-gonic/gin" |
| 22 | +) |
| 23 | + |
| 24 | +const BOT_ID = 1 |
| 25 | + |
| 26 | +type StockCommand struct { |
| 27 | + UserID uint `json:"user_id"` |
| 28 | + StockCode string `json:"stock_code"` |
| 29 | +} |
| 30 | + |
| 31 | +func fetchStockQuote(stockCode string) (string, error) { |
| 32 | + url := fmt.Sprintf("https://stooq.com/q/l/?s=%s&f=sd2t2ohlcv&h&e=csv", stockCode) |
| 33 | + resp, err := http.Get(url) |
| 34 | + if err != nil { |
| 35 | + return "", err |
| 36 | + } |
| 37 | + defer resp.Body.Close() |
| 38 | + |
| 39 | + reader := csv.NewReader(bufio.NewReader(resp.Body)) |
| 40 | + _, err = reader.Read() |
| 41 | + if err != nil { |
| 42 | + return "", err |
| 43 | + } |
| 44 | + |
| 45 | + record, err := reader.Read() |
| 46 | + if err != nil { |
| 47 | + if err == io.EOF { |
| 48 | + return "", fmt.Errorf("stock quote not found") |
| 49 | + } |
| 50 | + return "", err |
| 51 | + } |
| 52 | + |
| 53 | + closePrice := record[6] |
| 54 | + if closePrice == "N/D" { |
| 55 | + return "", fmt.Errorf("no data for stock %s", stockCode) |
| 56 | + } |
| 57 | + |
| 58 | + return fmt.Sprintf("%s quote is $%s per share", strings.ToUpper(stockCode), closePrice), nil |
| 59 | +} |
| 60 | + |
| 61 | +func runBot(cmdClient *mq.RabbitMQ, msgClient *mq.RabbitMQ) { |
| 62 | + msgs, err := cmdClient.Consume(false) // manual ack |
| 63 | + if err != nil { |
| 64 | + log.Fatalf("Bot: Failed to consume command queue: %v", err) |
| 65 | + } |
| 66 | + log.Println("Bot: Started consuming stock_commands") |
| 67 | + |
| 68 | + for d := range msgs { |
| 69 | + var cmd StockCommand |
| 70 | + err := json.Unmarshal(d.Body, &cmd) |
| 71 | + if err != nil { |
| 72 | + log.Printf("Bot: Invalid command message: %v", err) |
| 73 | + d.Ack(false) |
| 74 | + continue |
| 75 | + } |
| 76 | + |
| 77 | + quote, err := fetchStockQuote(cmd.StockCode) |
| 78 | + if err != nil { |
| 79 | + quote = fmt.Sprintf("Error fetching quote for %s: %v", cmd.StockCode, err) |
| 80 | + } |
| 81 | + |
| 82 | + botMessage := chat.PostMessageRequest{ |
| 83 | + Content: quote, |
| 84 | + } |
| 85 | + |
| 86 | + body, err := json.Marshal(botMessage) |
| 87 | + if err != nil { |
| 88 | + log.Printf("Bot: Failed to marshal botMessage: %v", err) |
| 89 | + d.Ack(false) |
| 90 | + continue |
| 91 | + } |
| 92 | + |
| 93 | + err = msgClient.Publish(body) |
| 94 | + if err != nil { |
| 95 | + log.Printf("Bot: Failed to publish botMessage: %v", err) |
| 96 | + d.Ack(false) |
| 97 | + continue |
| 98 | + } |
| 99 | + |
| 100 | + d.Ack(false) |
| 101 | + log.Println("Bot: Message acknowledged") |
| 102 | + } |
| 103 | +} |
| 104 | + |
| 105 | +func main() { |
| 106 | + dsn := os.Getenv("DATABASE_URL") |
| 107 | + db.Init(dsn) |
| 108 | + |
| 109 | + rabbitMQURL := os.Getenv("RABBITMQ_URL") |
| 110 | + if rabbitMQURL == "" { |
| 111 | + rabbitMQURL = "amqp://guest:guest@localhost:5672/" |
| 112 | + } |
| 113 | + |
| 114 | + rabbitCmd, err := mq.NewRabbitMQ(rabbitMQURL, "stock_commands") |
| 115 | + if err != nil { |
| 116 | + log.Fatalf("Failed to connect to RabbitMQ for commands: %v", err) |
| 117 | + } |
| 118 | + defer rabbitCmd.Close() |
| 119 | + |
| 120 | + rabbitMsgs, err := mq.NewRabbitMQ(rabbitMQURL, "chat_messages") |
| 121 | + if err != nil { |
| 122 | + log.Fatalf("Failed to connect to RabbitMQ for messages: %v", err) |
| 123 | + } |
| 124 | + defer rabbitMsgs.Close() |
| 125 | + |
| 126 | + chat.InitRabbitMQClient(rabbitCmd, rabbitMsgs) |
| 127 | + |
| 128 | + go runBot(rabbitCmd, rabbitMsgs) |
| 129 | + |
| 130 | + r := gin.Default() |
| 131 | + |
| 132 | + r.POST("/register", auth.Register) |
| 133 | + r.POST("/login", auth.Login) |
| 134 | + |
| 135 | + authorized := r.Group("/") |
| 136 | + authorized.Use(auth.JWTAuthMiddleware()) |
| 137 | + |
| 138 | + authorized.POST("/messages", chat.PostMessage) |
| 139 | + authorized.GET("/messages", chat.GetMessages) |
| 140 | + |
| 141 | + go websocket.HandleMessages() |
| 142 | + r.GET("/ws", websocket.HandleConnections) |
| 143 | + |
| 144 | + go func() { |
| 145 | + msgs, err := rabbitMsgs.Consume(false) |
| 146 | + if err != nil { |
| 147 | + log.Fatalf("Failed to consume chat messages: %v", err) |
| 148 | + } |
| 149 | + |
| 150 | + log.Println("Started consuming chat_messages") |
| 151 | + |
| 152 | + for d := range msgs { |
| 153 | + var msg chat.PostMessageRequest |
| 154 | + err := json.Unmarshal(d.Body, &msg) |
| 155 | + if err != nil { |
| 156 | + log.Printf("Failed to unmarshal chat post message: %v", err) |
| 157 | + d.Ack(false) |
| 158 | + continue |
| 159 | + } |
| 160 | + |
| 161 | + message := models.Message{ |
| 162 | + UserID: BOT_ID, |
| 163 | + Content: msg.Content, |
| 164 | + CreatedAt: time.Now(), |
| 165 | + } |
| 166 | + |
| 167 | + log.Println("Saving bot message") |
| 168 | + chat.SaveMessage(message) |
| 169 | + |
| 170 | + chat.BroadcastMessageToClients(msg.Content, "bot", message.CreatedAt) |
| 171 | + d.Ack(false) |
| 172 | + } |
| 173 | + }() |
| 174 | + |
| 175 | + log.Println("Server running on port 8080") |
| 176 | + log.Fatal(r.Run(":8080")) |
| 177 | +} |
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