package handlers

import (
	"fmt"
	"net/http"

	"github.com/gin-gonic/gin"

	"fishfish/database"
	"fishfish/models"
)

func GetItem(c *gin.Context) {
	id := c.Param("id")

	var item models.Item

	if err := database.DB.First(&item, id).Error; err != nil {
		c.JSON(http.StatusNotFound, gin.H{"error": "Товар не найден"})
		return
	}

	if item.AvatarURL != "" {
		item.AvatarURL = fmt.Sprintf("/static/items/%s", item.AvatarURL)
	} else {
		item.AvatarURL = fmt.Sprintf("/static/items/background.png")
	}

	c.JSON(http.StatusOK, item)
}

func GetAllItems(c *gin.Context) {
	var items []models.Item

	if err := database.DB.Find(&items).Error; err != nil {
		c.JSON(http.StatusInternalServerError, gin.H{"error": "Не удалось загрузить данные с сервера", "message": err.Error()})
		return
	}

	for i := range items {
		if items[i].AvatarURL != "" {
			items[i].AvatarURL = fmt.Sprintf("/static/items/%s", items[i].AvatarURL)
		} else {
			items[i].AvatarURL = fmt.Sprintf("/static/items/background.png")
		}
	}

	c.JSON(http.StatusOK, items)
}

func UpdateItem(c *gin.Context) {
	id := c.Param("id")

	var item models.Item

	if err := database.DB.First(&item, id).Error; err != nil {
		c.JSON(http.StatusNotFound, gin.H{"error": "Товар не найден"})
		return
	}

	var input models.Item
	if err := c.ShouldBindJSON(&input); err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"error": "Неверно введеные данные"})
		return
	}

	database.DB.Model(&item).Updates(models.Item{
		Name:  input.Name,
		Unit:  input.Unit,
		City:  input.City,
		Price: input.Price,
	})

	c.JSON(http.StatusOK, item)
}

func AddItem(c *gin.Context) {
	var input models.Item

	if err := c.ShouldBindJSON(&input); err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"error": "Неверные данные"})
		return
	}

	if err := database.DB.Create(&input).Error; err != nil {
		c.JSON(http.StatusInternalServerError, gin.H{"error": "Не удалось создать товар"})
		return
	}

	c.JSON(http.StatusCreated, input)
}

func DeleteItem(c *gin.Context) {
	id := c.Param("id")
	var item models.Item

	if err := database.DB.First(&item, id).Error; err != nil {
		c.JSON(http.StatusNotFound, gin.H{"error": "Указанный товар не найден"})
		return
	}

	database.DB.Delete(&item)

	c.JSON(http.StatusOK, gin.H{"message": "Товар успешно удален"})
}

func GetCategories(c *gin.Context) {
	var item models.Item
	categories := make([]string, 0)

	err := database.DB.Model(&item).Where("category IS NOT NULL AND category != ''").Distinct().Pluck("category", &categories).Error
	if err != nil {
		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
		return
	}

	c.JSON(http.StatusOK, categories)
}