package handlers

import (
	"fmt"
	"strconv"

	"github.com/gofiber/fiber/v3"
	"lmika.dev/lmika/weiro/models"
	"lmika.dev/lmika/weiro/services/categories"
)

type CategoriesHandler struct {
	CategoryService *categories.Service
}

func (ch CategoriesHandler) Index(c fiber.Ctx) error {
	cats, err := ch.CategoryService.ListCategoriesWithCounts(c.Context())
	if err != nil {
		return err
	}

	return c.Render("categories/index", fiber.Map{
		"categories": cats,
	})
}

func (ch CategoriesHandler) New(c fiber.Ctx) error {
	cat := models.Category{
		GUID: models.NewNanoID(),
	}
	return c.Render("categories/edit", fiber.Map{
		"category": cat,
		"isNew":    true,
	})
}

func (ch CategoriesHandler) Edit(c fiber.Ctx) error {
	catID, err := strconv.ParseInt(c.Params("categoryID"), 10, 64)
	if err != nil {
		return fiber.ErrBadRequest
	}

	cat, err := ch.CategoryService.GetCategory(c.Context(), catID)
	if err != nil {
		return err
	}

	return c.Render("categories/edit", fiber.Map{
		"category": cat,
		"isNew":    false,
	})
}

func (ch CategoriesHandler) Create(c fiber.Ctx) error {
	var req categories.CreateCategoryParams
	if err := c.Bind().Body(&req); err != nil {
		return err
	}

	_, err := ch.CategoryService.CreateCategory(c.Context(), req)
	if err != nil {
		return err
	}

	site := models.MustGetSite(c.Context())
	return c.Redirect().To(fmt.Sprintf("/sites/%v/categories", site.ID))
}

func (ch CategoriesHandler) Update(c fiber.Ctx) error {
	catID, err := strconv.ParseInt(c.Params("categoryID"), 10, 64)
	if err != nil {
		return fiber.ErrBadRequest
	}

	var req categories.CreateCategoryParams
	if err := c.Bind().Body(&req); err != nil {
		return err
	}

	_, err = ch.CategoryService.UpdateCategory(c.Context(), catID, req)
	if err != nil {
		return err
	}

	site := models.MustGetSite(c.Context())
	return c.Redirect().To(fmt.Sprintf("/sites/%v/categories", site.ID))
}

func (ch CategoriesHandler) Delete(c fiber.Ctx) error {
	catID, err := strconv.ParseInt(c.Params("categoryID"), 10, 64)
	if err != nil {
		return fiber.ErrBadRequest
	}

	if err := ch.CategoryService.DeleteCategory(c.Context(), catID); err != nil {
		return err
	}

	site := models.MustGetSite(c.Context())
	return c.Redirect().To(fmt.Sprintf("/sites/%v/categories", site.ID))
}