package morningalarm

import (
	"net/http"
	"os"
	"path/filepath"
	"time"

	"github.com/gin-gonic/gin"
)

type Device struct {
	Name string `json:"name"`
	ID   string `json:"id"`
}

type AlarmPatch struct {
	Disabled bool `json:"disabled"`
}

func (ma *MorningAlarm) setupWebserver() {

	// TODO: This is stupid
	execPath, err := os.Executable()
	if err != nil {
		panic("Shit")
	}

	// Serve static files
	ma.ro.NoRoute(gin.WrapH(http.FileServer(http.Dir(filepath.Join(filepath.Dir(execPath), "public")))))

	// Create a new alarm
	ma.ro.POST("/api/alarm", func(c *gin.Context) {
		var body alarm

		if err := c.BindJSON(&body); err != nil {
			c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
			return
		}

		// Check if alarm name is valid
		if body.Name == "" {
			c.JSON(http.StatusBadRequest, gin.H{"error": "Alarm name cannot be empty"})
			return
		}

		// Chekc if alarm name contains only alphanumeric characters
		for _, char := range body.Name {
			if !((char >= 'a' && char <= 'z') || (char >= 'A' && char <= 'Z') || (char >= '0' && char <= '9')) {
				c.JSON(http.StatusBadRequest, gin.H{"error": "Alarm name must contain only alphanumeric characters"})
				return
			}
		}

		_, err := ma.addAlarm(body.Time, body.Name)

		if err != nil {
			c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
		} else {
			err = ma.saveAlarmsToFile()

			if err != nil {
				c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
				return
			}

			c.Header("Location", "/api/alarm/"+body.Name)
			c.JSON(http.StatusCreated, gin.H{})
		}
	})

	// Get an alarm
	ma.ro.GET("/api/alarm/:id", func(c *gin.Context) {
		id := c.Param("id")

		alarm := ma.getAlarm(id)

		if alarm == nil {
			c.JSON(http.StatusNotFound, gin.H{"error": "Alarm not found"})
			return
		}

		c.JSON(http.StatusOK, alarm)
	})

	// Get all alarms
	ma.ro.GET("/api/alarm", func(c *gin.Context) {
		c.JSON(http.StatusOK, ma.alarms)
	})

	// Delete an alarm
	ma.ro.DELETE("/api/alarm/:id", func(c *gin.Context) {
		id := c.Param("id")

		if ma.removeAlarm(id) {
			err := ma.saveAlarmsToFile()

			if err != nil {
				c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
				return
			}

			c.JSON(http.StatusOK, gin.H{})
		} else {
			c.JSON(http.StatusNotFound, gin.H{"error": "Alarm not found"})
		}
	})

	// Get info about the server and the alarms
	ma.ro.GET("/api/info", func(c *gin.Context) {
		spotifyUser, err := ma.sp.CurrentUser(c)

		if err != nil {
			c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
			return
		}

		currentTime := time.Now()
		zone, offset := currentTime.Zone()

		nextIn := ma.nextAlarm()

		response := gin.H{
			"spotifyUser":       spotifyUser.User.DisplayName,
			"serverTime":        currentTime.Format("15:04:05"),
			"timezone":          zone,
			"timezoneOffsetInH": offset / 60 / 60,
			"alarms":            len(ma.cr.Entries()),
			"wakeupPlaylist":    ma.config.PlaylistID,
			"deviceName":        ma.config.DeviceName,
		}

		if nextIn != nil {
			response["nextAlarmAt"] = nextIn.String()
			response["nextAlarmIn"] = nextIn.Sub(currentTime).String()
		}

		c.JSON(http.StatusOK, response)
	})

	// Get available spotify devices
	ma.ro.GET("/api/device", func(c *gin.Context) {
		devices, err := ma.getAvailableDevices()

		if err != nil {
			c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
			return
		}

		c.JSON(http.StatusOK, devices)
	})

	// Trigger an alarm immediately
	ma.ro.POST("/api/trigger", func(c *gin.Context) {
		if _, err := ma.playWakeUpMusic(); err != nil {
			c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
			return
		}

		c.JSON(http.StatusOK, gin.H{})
	})

	ma.ro.PATCH("/api/alarm/:id", func(c *gin.Context) {
		id := c.Param("id")

		alarm := ma.getAlarm(id)

		if alarm == nil {
			c.JSON(http.StatusNotFound, gin.H{"error": "Alarm not found"})
			return
		}

		var body AlarmPatch

		if err := c.BindJSON(&body); err != nil {
			c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
			return
		}

		ma.setDisabled(id, body.Disabled)

		err := ma.saveAlarmsToFile()

		if err != nil {
			c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
			return
		}

		c.JSON(http.StatusOK, gin.H{})
	})
}