package controller

import (
	"context"
	"encoding/json"
	"log/slog"
	"net/http"
	"strconv"

	"github.com/AFASystems/presence/internal/pkg/api/response"
	"github.com/AFASystems/presence/internal/pkg/model"
	"github.com/AFASystems/presence/internal/pkg/validation"
	"github.com/gorilla/mux"
	"gorm.io/gorm"
)

func FloorAddController(db *gorm.DB, context context.Context) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		var floor model.Floor
		if err := json.NewDecoder(r.Body).Decode(&floor); err != nil {
			response.BadRequest(w, "invalid request body")
			return
		}
		if err := validation.Struct(&floor); err != nil {
			response.BadRequest(w, err.Error())
			return
		}
		if err := db.WithContext(context).Create(&floor).Error; err != nil {
			response.InternalError(w, "failed to create floor", err)
			return
		}

		response.JSON(w, http.StatusCreated, map[string]string{"status": "created"})
	}
}

func FloorListController(db *gorm.DB, context context.Context) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		query := r.URL.Query()

		lStr := query.Get("limit")
		if lStr == "" {
			lStr = "100"
		}
		limit, err := strconv.Atoi(lStr)
		if err != nil {
			slog.Error("invalid limit parameter", "value", lStr)
			response.BadRequest(w, "invalid limit parameter")
			return
		}

		oStr := query.Get("offset")
		if oStr == "" {
			oStr = "0"
		}
		offset, err := strconv.Atoi(oStr)
		if err != nil {
			slog.Error("invalid offset parameter", "value", oStr)
			response.BadRequest(w, "invalid offset parameter")
			return
		}

		var floors []model.Floor
		if err := db.WithContext(context).Limit(limit).Offset(offset).Find(&floors).Error; err != nil {
			response.InternalError(w, "failed to list floors", err)
			return
		}
		response.JSON(w, http.StatusOK, floors)
	}
}

func FloorUpdateController(db *gorm.DB, context context.Context) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		var floor model.Floor
		if err := json.NewDecoder(r.Body).Decode(&floor); err != nil {
			response.BadRequest(w, "invalid request body")
			return
		}
	}
}

func FloorDeleteController(db *gorm.DB, context context.Context) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		id := mux.Vars(r)["id"]
		res := db.WithContext(context).Delete(&model.Floor{}, "id = ?", id)
		if res.RowsAffected == 0 {
			response.NotFound(w, "floor not found")
			return
		}
		if res.Error != nil {
			response.InternalError(w, "failed to delete floor", res.Error)
			return
		}

		response.JSON(w, http.StatusOK, map[string]string{"status": "deleted"})
	}
}