package websocket

import (
	"encoding/json"
	"time"

	"github.com/gorilla/websocket"

	GoTomato "git.smsvc.net/pomodoro/GoTomato/pkg/models"
)

var Done = make(chan struct{})

// Receives websocket messages and writes them to a channel.
// Closes the channel if websocket closes.
func (c *Client) ProcessServerMessages(channel chan<- GoTomato.ServerMessage) {
	var serverMessage GoTomato.ServerMessage

	defer close(Done)

	for {
		c.Conn.SetReadDeadline(time.Now().Add(10 * time.Second))
		_, message, err := c.Conn.ReadMessage()
		if err != nil {
			c.LastErr = err

			// On normal closure exit gracefully
			if websocket.IsCloseError(err, websocket.CloseNormalClosure) {
				return
			}

			// reset connection and reconnect
			c.Conn = nil
			pw := c.Password
			for !c.Connected() {
				channel <- serverMessage // send last known ServerMessage to update view
				time.Sleep(time.Second)
				*c = Connect(c.Server)
			}
			c.Password = pw
			continue
		}

		err = json.Unmarshal(message, &serverMessage)
		c.LastErr = err

		channel <- serverMessage
	}
}