package handlers

import (
	"net/http"

	"github.com/breakpilot/school-service/internal/models"
	"github.com/gin-gonic/gin"
)

// Class- and Room-constraint HTTP handlers.

// ---------- Class Max Hours / Day ----------

func (h *Handler) CreateClassMaxHoursDay(c *gin.Context) {
	uid := getUserID(c)
	if uid == "" {
		respondError(c, http.StatusUnauthorized, "User not authenticated")
		return
	}
	var req models.CreateClassMaxHoursDayRequest
	if err := c.ShouldBindJSON(&req); err != nil {
		respondError(c, http.StatusBadRequest, "Invalid request: "+err.Error())
		return
	}
	out, err := h.timetableService.CreateClassMaxHoursDay(c.Request.Context(), uid, &req)
	if err != nil {
		respondError(c, http.StatusInternalServerError, "Failed to create constraint: "+err.Error())
		return
	}
	respondCreated(c, out)
}

func (h *Handler) ListClassMaxHoursDay(c *gin.Context) {
	uid := getUserID(c)
	if uid == "" {
		respondError(c, http.StatusUnauthorized, "User not authenticated")
		return
	}
	out, err := h.timetableService.ListClassMaxHoursDay(c.Request.Context(), uid)
	if err != nil {
		respondError(c, http.StatusInternalServerError, "Failed to list constraints: "+err.Error())
		return
	}
	respondSuccess(c, out)
}

func (h *Handler) DeleteClassMaxHoursDay(c *gin.Context) {
	uid := getUserID(c)
	if uid == "" {
		respondError(c, http.StatusUnauthorized, "User not authenticated")
		return
	}
	if err := h.timetableService.DeleteClassMaxHoursDay(c.Request.Context(), c.Param("id"), uid); err != nil {
		respondError(c, http.StatusInternalServerError, "Failed to delete constraint: "+err.Error())
		return
	}
	c.JSON(http.StatusOK, gin.H{"message": "Constraint deleted"})
}

// ---------- Class No Gaps ----------

func (h *Handler) CreateClassNoGaps(c *gin.Context) {
	uid := getUserID(c)
	if uid == "" {
		respondError(c, http.StatusUnauthorized, "User not authenticated")
		return
	}
	var req models.CreateClassNoGapsRequest
	if err := c.ShouldBindJSON(&req); err != nil {
		respondError(c, http.StatusBadRequest, "Invalid request: "+err.Error())
		return
	}
	out, err := h.timetableService.CreateClassNoGaps(c.Request.Context(), uid, &req)
	if err != nil {
		respondError(c, http.StatusInternalServerError, "Failed to create constraint: "+err.Error())
		return
	}
	respondCreated(c, out)
}

func (h *Handler) ListClassNoGaps(c *gin.Context) {
	uid := getUserID(c)
	if uid == "" {
		respondError(c, http.StatusUnauthorized, "User not authenticated")
		return
	}
	out, err := h.timetableService.ListClassNoGaps(c.Request.Context(), uid)
	if err != nil {
		respondError(c, http.StatusInternalServerError, "Failed to list constraints: "+err.Error())
		return
	}
	respondSuccess(c, out)
}

func (h *Handler) DeleteClassNoGaps(c *gin.Context) {
	uid := getUserID(c)
	if uid == "" {
		respondError(c, http.StatusUnauthorized, "User not authenticated")
		return
	}
	if err := h.timetableService.DeleteClassNoGaps(c.Request.Context(), c.Param("id"), uid); err != nil {
		respondError(c, http.StatusInternalServerError, "Failed to delete constraint: "+err.Error())
		return
	}
	c.JSON(http.StatusOK, gin.H{"message": "Constraint deleted"})
}

// ---------- Room Requires Type ----------

func (h *Handler) CreateRoomRequiresType(c *gin.Context) {
	uid := getUserID(c)
	if uid == "" {
		respondError(c, http.StatusUnauthorized, "User not authenticated")
		return
	}
	var req models.CreateRoomRequiresTypeRequest
	if err := c.ShouldBindJSON(&req); err != nil {
		respondError(c, http.StatusBadRequest, "Invalid request: "+err.Error())
		return
	}
	out, err := h.timetableService.CreateRoomRequiresType(c.Request.Context(), uid, &req)
	if err != nil {
		respondError(c, http.StatusInternalServerError, "Failed to create constraint: "+err.Error())
		return
	}
	respondCreated(c, out)
}

func (h *Handler) ListRoomRequiresTypes(c *gin.Context) {
	uid := getUserID(c)
	if uid == "" {
		respondError(c, http.StatusUnauthorized, "User not authenticated")
		return
	}
	out, err := h.timetableService.ListRoomRequiresTypes(c.Request.Context(), uid)
	if err != nil {
		respondError(c, http.StatusInternalServerError, "Failed to list constraints: "+err.Error())
		return
	}
	respondSuccess(c, out)
}

func (h *Handler) DeleteRoomRequiresType(c *gin.Context) {
	uid := getUserID(c)
	if uid == "" {
		respondError(c, http.StatusUnauthorized, "User not authenticated")
		return
	}
	if err := h.timetableService.DeleteRoomRequiresType(c.Request.Context(), c.Param("id"), uid); err != nil {
		respondError(c, http.StatusInternalServerError, "Failed to delete constraint: "+err.Error())
		return
	}
	c.JSON(http.StatusOK, gin.H{"message": "Constraint deleted"})
}

// ---------- Room Unavailable ----------

func (h *Handler) CreateRoomUnavailable(c *gin.Context) {
	uid := getUserID(c)
	if uid == "" {
		respondError(c, http.StatusUnauthorized, "User not authenticated")
		return
	}
	var req models.CreateRoomUnavailableRequest
	if err := c.ShouldBindJSON(&req); err != nil {
		respondError(c, http.StatusBadRequest, "Invalid request: "+err.Error())
		return
	}
	out, err := h.timetableService.CreateRoomUnavailable(c.Request.Context(), uid, &req)
	if err != nil {
		respondError(c, http.StatusInternalServerError, "Failed to create constraint: "+err.Error())
		return
	}
	respondCreated(c, out)
}

func (h *Handler) ListRoomUnavailable(c *gin.Context) {
	uid := getUserID(c)
	if uid == "" {
		respondError(c, http.StatusUnauthorized, "User not authenticated")
		return
	}
	out, err := h.timetableService.ListRoomUnavailable(c.Request.Context(), uid)
	if err != nil {
		respondError(c, http.StatusInternalServerError, "Failed to list constraints: "+err.Error())
		return
	}
	respondSuccess(c, out)
}

func (h *Handler) DeleteRoomUnavailable(c *gin.Context) {
	uid := getUserID(c)
	if uid == "" {
		respondError(c, http.StatusUnauthorized, "User not authenticated")
		return
	}
	if err := h.timetableService.DeleteRoomUnavailable(c.Request.Context(), c.Param("id"), uid); err != nil {
		respondError(c, http.StatusInternalServerError, "Failed to delete constraint: "+err.Error())
		return
	}
	c.JSON(http.StatusOK, gin.H{"message": "Constraint deleted"})
}