package handlers

import (
	"fmt"
	"strconv"

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

type PagesHandler struct {
	PageService *pages.Service
}

func (ph PagesHandler) Index(c fiber.Ctx) error {
	pagesList, err := ph.PageService.ListPages(c.Context())
	if err != nil {
		return err
	}

	return c.Render("pages/index", fiber.Map{
		"pages": pagesList,
	})
}

func (ph PagesHandler) New(c fiber.Ctx) error {
	page := models.Page{
		GUID: models.NewNanoID(),
	}
	return c.Render("pages/edit", fiber.Map{
		"page":      page,
		"isNew":     true,
		"bodyClass": "page-edit-page",
	})
}

func (ph PagesHandler) Edit(c fiber.Ctx) error {
	pageID, err := strconv.ParseInt(c.Params("pageID"), 10, 64)
	if err != nil {
		return fiber.ErrBadRequest
	}

	page, err := ph.PageService.GetPage(c.Context(), pageID)
	if err != nil {
		return err
	}

	return c.Render("pages/edit", fiber.Map{
		"page":      page,
		"isNew":     false,
		"bodyClass": "page-edit-page",
	})
}

func (ph PagesHandler) Create(c fiber.Ctx) error {
	var req pages.CreatePageParams
	if err := c.Bind().Body(&req); err != nil {
		return err
	}

	_, err := ph.PageService.CreatePage(c.Context(), req)
	if err != nil {
		return err
	}

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

func (ph PagesHandler) Update(c fiber.Ctx) error {
	pageID, err := strconv.ParseInt(c.Params("pageID"), 10, 64)
	if err != nil {
		return fiber.ErrBadRequest
	}

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

	_, err = ph.PageService.UpdatePage(c.Context(), pageID, req)
	if err != nil {
		return err
	}

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

func (ph PagesHandler) Delete(c fiber.Ctx) error {
	pageID, err := strconv.ParseInt(c.Params("pageID"), 10, 64)
	if err != nil {
		return fiber.ErrBadRequest
	}

	if err := ph.PageService.DeletePage(c.Context(), pageID); err != nil {
		return err
	}

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

func (ph PagesHandler) Reorder(c fiber.Ctx) error {
	var req struct {
		PageIDs []int64 `json:"page_ids"`
	}
	if err := c.Bind().Body(&req); err != nil {
		return err
	}

	if err := ph.PageService.ReorderPages(c.Context(), req.PageIDs); err != nil {
		return err
	}

	return c.JSON(fiber.Map{"ok": true})
}