package main

import (
	"errors"
	"fmt"
	"net/http"

	"git.32bit.cafe/32bitcafe/guestbook/internal/forms"
	"git.32bit.cafe/32bitcafe/guestbook/internal/models"
	"git.32bit.cafe/32bitcafe/guestbook/internal/validator"
	"git.32bit.cafe/32bitcafe/guestbook/ui/views"
)

func (app *application) getWebsiteCreate(w http.ResponseWriter, r *http.Request) {
	form := forms.WebsiteCreateForm{}
	data := app.newCommonData(r)
	views.WebsiteCreate("Add Website", data, form).Render(r.Context(), w)
}

func (app *application) postWebsiteCreate(w http.ResponseWriter, r *http.Request) {
	userId := app.sessionManager.GetInt64(r.Context(), "authenticatedUserId")
	var form forms.WebsiteCreateForm
	err := app.decodePostForm(r, &form)
	if err != nil {
		app.clientError(w, http.StatusBadRequest)
		return
	}

	form.CheckField(validator.NotBlank(form.AuthorName), "authorName", "This field cannot be blank")
	form.CheckField(validator.MaxChars(form.AuthorName, 256), "authorName", "This field cannot exceed 256 characters")
	form.CheckField(validator.NotBlank(form.Name), "sitename", "This field cannot be blank")
	form.CheckField(validator.MaxChars(form.Name, 256), "sitename", "This field cannot exceed 256 characters")
	form.CheckField(validator.NotBlank(form.SiteUrl), "siteurl", "This field cannot be blank")
	form.CheckField(validator.MaxChars(form.SiteUrl, 512), "siteurl", "This field cannot exceed 512 characters")

	if !form.Valid() {
		data := app.newCommonData(r)
		w.WriteHeader(http.StatusUnprocessableEntity)
		views.WebsiteCreate("Add a Website", data, form).Render(r.Context(), w)
	}
	websiteShortID := app.createShortId()
	websiteId, err := app.websites.Insert(websiteShortID, userId, form.Name, form.SiteUrl, form.AuthorName)
	if err != nil {
		app.serverError(w, r, err)
		return
	}
	// TODO: how to handle website creation success but guestbook creation failure?
	guestbookShortID := app.createShortId()
	_, err = app.guestbooks.Insert(guestbookShortID, userId, websiteId)
	if err != nil {
		app.serverError(w, r, err)
		return
	}
	app.sessionManager.Put(r.Context(), "flash", "Website successfully registered!")
	if r.Header.Get("HX-Request") == "true" {
		w.Header().Add("HX-Trigger", "newWebsite")
		views.WebsiteCreateButton().Render(r.Context(), w)
		return
	}
	http.Redirect(w, r, fmt.Sprintf("/websites/%s", shortIdToSlug(websiteShortID)), http.StatusSeeOther)
}

func (app *application) getWebsiteDashboard(w http.ResponseWriter, r *http.Request) {
	slug := r.PathValue("id")
	user := app.getCurrentUser(r)
	website, err := app.websites.Get(slugToShortId(slug))
	if err != nil {
		if errors.Is(err, models.ErrNoRecord) {
			http.NotFound(w, r)
		} else {
			app.serverError(w, r, err)
		}
		return
	}
	if user.ID != website.UserId {
		app.clientError(w, http.StatusUnauthorized)
	}
	data := app.newCommonData(r)
	views.WebsiteDashboard("Guestbook", data, website).Render(r.Context(), w)
}

func (app *application) getWebsiteList(w http.ResponseWriter, r *http.Request) {

	userId := app.sessionManager.GetInt64(r.Context(), "authenticatedUserId")
	websites, err := app.websites.GetAll(userId)
	if err != nil {
		app.serverError(w, r, err)
		return
	}
	data := app.newCommonData(r)
	views.WebsiteList("My Websites", data, websites).Render(r.Context(), w)
}