package httpapi

import (
	"net/http"

	"watch-party-backend/internal/repo"
	"watch-party-backend/internal/service"

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

func NewRouter(svc service.EpisodeService) *gin.Engine {
	r := gin.New()
	r.Use(gin.Logger(), gin.Recovery())

	r.GET("/healthz", func(c *gin.Context) {
		c.JSON(http.StatusOK, gin.H{"status": "ok"})
	})

	v1 := r.Group("/v1")

	v1.GET("/current", func(c *gin.Context) {
		cur, err := svc.GetCurrent(c.Request.Context())
		if err != nil {
			if err == repo.ErrNotFound {
				c.JSON(http.StatusNotFound, gin.H{"error": "no current row found"})
				return
			}
			c.JSON(http.StatusInternalServerError, gin.H{"error": "query failed"})
			return
		}
		c.JSON(http.StatusOK, cur)
	})

	type setCurrentReq struct {
		ID        int64  `json:"id" binding:"required"`
		StartTime string `json:"start_time" binding:"required"`
	}

	v1.POST("/current", func(c *gin.Context) {
		var req setCurrentReq
		if err := c.ShouldBindJSON(&req); err != nil {
			c.JSON(http.StatusBadRequest, gin.H{"error": "invalid payload"})
			return
		}
		cur, err := svc.SetCurrent(c.Request.Context(), req.ID, req.StartTime)
		if err != nil {
			switch err {
			case service.ErrInvalidTime:
				c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
				return
			case repo.ErrNotFound:
				c.JSON(http.StatusNotFound, gin.H{"error": "id not found"})
				return
			default:
				c.JSON(http.StatusInternalServerError, gin.H{"error": "update failed"})
				return
			}
		}
		c.JSON(http.StatusOK, cur)
	})

	return r
}