package main

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

	"github.com/gin-gonic/gin"

	"git.zb-server.de/ZB-Server/EscapeFromTeacher/pkg/server"
)

// adminRoomPlayer ist eine vereinfachte Spieler-Ansicht für das Admin-Panel
type adminRoomPlayer struct {
	Name          string  `json:"name"`
	Score         int     `json:"score"`
	IsAlive       bool    `json:"is_alive"`
	IsSpectator   bool    `json:"is_spectator"`
	X             float64 `json:"x"`
	HasDoubleJump bool    `json:"has_double_jump"`
	HasGodMode    bool    `json:"has_godmode"`
}

// adminRoom ist eine vereinfachte Raum-Ansicht für das Admin-Panel
type adminRoom struct {
	ID               string            `json:"id"`
	Status           string            `json:"status"`
	PlayerCount      int               `json:"player_count"`
	AliveCount       int               `json:"alive_count"`
	ScrollX          float64           `json:"scroll_x"`
	CurrentSpeed     float64           `json:"current_speed"`
	DifficultyFactor float64           `json:"difficulty_factor"`
	ElapsedSeconds   int               `json:"elapsed_seconds"`
	HostID           string            `json:"host_id"`
	Players          []adminRoomPlayer `json:"players"`
}

// RegisterAdminRoutes registriert alle Admin-Routen mit BasicAuth
func RegisterAdminRoutes(r *gin.Engine) {
	user := os.Getenv("ADMIN_USER")
	if user == "" {
		user = "admin"
	}
	password := os.Getenv("ADMIN_PASSWORD")
	if password == "" {
		password = "changeme"
	}

	admin := r.Group("/admin", gin.BasicAuth(gin.Accounts{user: password}))

	// Admin Panel HTML
	admin.GET("", func(c *gin.Context) {
		c.Header("Cache-Control", "no-store")
		http.ServeFile(c.Writer, c.Request, "./cmd/client/web/admin.html")
	})

	// --- API: Leaderboard ---

	admin.GET("/api/leaderboard", func(c *gin.Context) {
		if server.GlobalLeaderboard == nil {
			c.JSON(503, gin.H{"error": "Leaderboard nicht verfügbar"})
			return
		}
		entries := server.GlobalLeaderboard.GetAll()
		c.JSON(200, entries)
	})

	admin.DELETE("/api/leaderboard/:key", func(c *gin.Context) {
		key := c.Param("key")
		if key == "" {
			c.JSON(400, gin.H{"error": "Kein Key angegeben"})
			return
		}
		if server.GlobalLeaderboard == nil {
			c.JSON(503, gin.H{"error": "Leaderboard nicht verfügbar"})
			return
		}
		if err := server.GlobalLeaderboard.DeleteEntry(key); err != nil {
			c.JSON(500, gin.H{"error": err.Error()})
			return
		}
		c.JSON(200, gin.H{"ok": true, "deleted": key})
	})

	// --- API: Rooms ---

	admin.GET("/api/rooms", func(c *gin.Context) {
		mu.RLock()
		defer mu.RUnlock()

		result := make([]adminRoom, 0, len(rooms))
		for _, room := range rooms {
			room.Mutex.RLock()

			elapsed := 0
			if room.Status == "RUNNING" || room.Status == "GAMEOVER" {
				elapsed = int(time.Since(room.GameStartTime).Seconds())
			}

			players := make([]adminRoomPlayer, 0, len(room.Players))
			aliveCount := 0
			for _, p := range room.Players {
				if p.IsAlive && !p.IsSpectator {
					aliveCount++
				}
				players = append(players, adminRoomPlayer{
					Name:          p.Name,
					Score:         p.Score,
					IsAlive:       p.IsAlive,
					IsSpectator:   p.IsSpectator,
					X:             p.X,
					HasDoubleJump: p.HasDoubleJump,
					HasGodMode:    p.HasGodMode,
				})
			}

			result = append(result, adminRoom{
				ID:               room.ID,
				Status:           room.Status,
				PlayerCount:      len(room.Players),
				AliveCount:       aliveCount,
				ScrollX:          room.GlobalScrollX,
				CurrentSpeed:     room.CurrentSpeed,
				DifficultyFactor: room.DifficultyFactor,
				ElapsedSeconds:   elapsed,
				HostID:           room.HostID,
				Players:          players,
			})

			room.Mutex.RUnlock()
		}

		c.JSON(200, result)
	})
}