package controllers

import (
	"errors"
	"fmt"

	"git.readonly.ch/bouzoure/pop-camarades/helpers"
	"git.readonly.ch/bouzoure/pop-camarades/models"
	"github.com/gofiber/fiber/v2"
	"gorm.io/gorm"
)

func Lists(c *fiber.Ctx) error {
	db, err := helpers.GetDatabase()
	if err != nil {
		return err
	}

	var lists []models.List
	result := db.Order("name asc").Find(&lists)

	if result.Error != nil && !errors.Is(result.Error, gorm.ErrRecordNotFound) {
		return err
	}

	return c.Render("lists", fiber.Map{
		"PageTitle": "Listes",
		"Lists":     lists,
	})
}

func ListShow(c *fiber.Ctx) error {
	id := c.Params("id")

	db, err := helpers.GetDatabase()
	if err != nil {
		return err
	}

	var list models.List
	result := db.Find(&list, "id = ?", id)

	if result.Error != nil {
		return result.Error
	}

	if result.RowsAffected < 1 {
		return fiber.NewError(fiber.StatusNotFound, "Not found")
	}

	title := fmt.Sprintf(
		"%s | Listes",
		list.Name,
	)

	var listItems []models.ListItem
	db.Order("value asc").Find(&listItems, "list_id = ?", id)

	return c.Render("list", fiber.Map{
		"PageTitle": title,
		"List":      list,
		"ListItems": listItems,
	})
}

func ListAdd(c *fiber.Ctx) error {
	var list models.List
	var errors []string

	db, err := helpers.GetDatabase()
	if err != nil {
		return err
	}

	if c.Method() == "POST" {
		name := c.FormValue("name")
		multi := c.FormValue("multi")

		if len(name) > 100 || len(name) < 1 {
			errors = append(errors, "Le nom doit avoir entre 1 et 100 caractères")
		}

		list.Name = name
		list.Multi = false
		if multi == "on" {
			list.Multi = true
		}

		if len(errors) == 0 {
			result := db.Create(&list)
			if result.Error != nil {
				return result.Error
			}

			c.Redirect(fmt.Sprintf(
				"/admin/lists/%d",
				list.ID,
			))
		}
	}

	return c.Render("list_form", fiber.Map{
		"PageTitle": "Ajouter une liste",
		"List":      list,
		"Errors":    errors,
	})
}

func ListEdit(c *fiber.Ctx) error {
	id := c.Params("id")

	db, err := helpers.GetDatabase()
	if err != nil {
		return err
	}

	var list models.List
	result := db.Find(&list, "id = ?", id)

	if result.Error != nil {
		return result.Error
	}

	if result.RowsAffected < 1 {
		return fiber.NewError(fiber.StatusNotFound, "Not found")
	}

	title := fmt.Sprintf(
		"%s | Modifier liste",
		list.Name,
	)

	var errors []string
	if c.Method() == "POST" {
		multiOriginal := list.Multi

		name := c.FormValue("name")
		multi := c.FormValue("multi")

		if len(name) > 100 || len(name) < 1 {
			errors = append(errors, "Le nom doit avoir entre 1 et 100 caractères")
		}

		list.Name = name
		list.Multi = false
		if multi == "on" {
			list.Multi = true
		}

		if len(errors) == 0 {
			result = db.Save(&list)
			if result.Error != nil {
				return result.Error
			}

			if !list.Multi && multiOriginal {
				var listItems []models.ListItem
				result = db.Find(&listItems,
					"list_id = ? AND `default` = ?",
					list.ID, true,
				)

				if result.RowsAffected > 1 {
					db.Model(&models.ListItem{}).Where(
						"list_id = ?", list.ID,
					).Update("default", false)
				}
			}

			c.Redirect(fmt.Sprintf(
				"/admin/lists/%d",
				list.ID,
			))
		}
	}

	return c.Render("list_form", fiber.Map{
		"PageTitle": title,
		"List":      list,
		"Errors":    errors,
	})
}

func ListDelete(c *fiber.Ctx) error {
	id := c.Params("id")

	db, err := helpers.GetDatabase()
	if err != nil {
		return err
	}

	result := db.Delete(&models.List{}, id)
	if result.Error != nil {
		return result.Error
	}

	return c.Redirect("/admin/lists")
}

func ListItemAdd(c *fiber.Ctx) error {
	id := c.Params("id")

	db, err := helpers.GetDatabase()
	if err != nil {
		return err
	}

	var list models.List
	result := db.Find(&list, "id = ?", id)

	if result.Error != nil {
		return result.Error
	}

	if result.RowsAffected < 1 {
		return fiber.NewError(fiber.StatusNotFound, "Not found")
	}

	title := fmt.Sprintf(
		"%s | Ajouter un élément à la liste",
		list.Name,
	)

	listItem := models.ListItem{
		ListID: list.ID,
	}
	var errors []string

	if c.Method() == "POST" {
		value := c.FormValue("value")
		isDefault := c.FormValue("default")

		if len(value) > 100 || len(value) < 1 {
			errors = append(errors, "La valeur doit avoir entre 1 et 100 caractères")
		}

		listItem.Value = value
		listItem.Default = false
		if isDefault == "on" {
			listItem.Default = true
		}

		if len(errors) == 0 {
			result := db.Create(&listItem)
			if result.Error != nil {
				return result.Error
			}

			if listItem.Default && !list.Multi {
				db.Model(&models.ListItem{}).Where(
					"list_id = ? AND id <> ?",
					list.ID, listItem.ID,
				).Update("default", false)
			}

			c.Redirect(fmt.Sprintf(
				"/admin/lists/%d",
				list.ID,
			))
		}
	}

	return c.Render("listitem_form", fiber.Map{
		"PageTitle": title,
		"List":      list,
		"ListItem":  listItem,
		"Errors":    errors,
	})
}

func ListItemEdit(c *fiber.Ctx) error {
	id := c.Params("id")
	itemid := c.Params("itemid")

	db, err := helpers.GetDatabase()
	if err != nil {
		return err
	}

	var list models.List
	result := db.Find(&list, "id = ?", id)

	if result.Error != nil {
		return result.Error
	}

	if result.RowsAffected < 1 {
		return fiber.NewError(fiber.StatusNotFound, "Not found")
	}

	var listItem models.ListItem
	result = db.Find(&listItem, "id = ?", itemid)

	if result.Error != nil {
		return result.Error
	}

	if result.RowsAffected < 1 {
		return fiber.NewError(fiber.StatusNotFound, "Not found")
	}

	title := fmt.Sprintf(
		"%s | Modifier un élément de la liste",
		list.Name,
	)

	var errors []string
	if c.Method() == "POST" {
		value := c.FormValue("value")
		isDefault := c.FormValue("default")

		if len(value) > 100 || len(value) < 1 {
			errors = append(errors, "La valeur doit avoir entre 1 et 100 caractères")
		}

		listItem.Value = value
		listItem.Default = false
		if isDefault == "on" {
			listItem.Default = true
		}

		if len(errors) == 0 {
			result = db.Save(&listItem)
			if result.Error != nil {
				return result.Error
			}

			if listItem.Default && !list.Multi {
				db.Model(&models.ListItem{}).Where(
					"list_id = ? AND id <> ?",
					list.ID, listItem.ID,
				).Update("default", false)
			}

			c.Redirect(fmt.Sprintf(
				"/admin/lists/%d",
				list.ID,
			))
		}
	}

	return c.Render("listitem_form", fiber.Map{
		"PageTitle": title,
		"List":      list,
		"ListItem":  listItem,
		"Errors":    errors,
	})
}

func ListItemDelete(c *fiber.Ctx) error {
	id := c.Params("id")
	itemid := c.Params("itemid")

	db, err := helpers.GetDatabase()
	if err != nil {
		return err
	}

	var list models.List
	result := db.Find(&list, "id = ?", id)

	if result.Error != nil {
		return result.Error
	}

	if result.RowsAffected < 1 {
		return fiber.NewError(fiber.StatusNotFound, "Not found")
	}

	result = db.Delete(&models.ListItem{}, itemid)
	if result.Error != nil {
		return result.Error
	}

	return c.Redirect(fmt.Sprintf(
		"/admin/lists/%d", list.ID,
	))
}