package render

import (
	"fmt"
	"log/slog"
	"net/http"
	"strings"

	index "physick.ru/Index"
	settings "physick.ru/Settings"
)

type IndexTemplateContents struct {
	LastArticles []index.Article
	Content string
	Tags []index.Tag
}

func RegisterEndpoints() {
	// http.Handle("static/", http.FileServer(http.FS(os.DirFS(settings.Current.StaticLocation))))
	http.HandleFunc("/articles/{name}", test)
	http.HandleFunc("/.well-known/discord", discord_verification)
	http.HandleFunc("/llms.txt", llms)
	http.HandleFunc("/", mux)
}

func discord_verification(w http.ResponseWriter, r *http.Request) {
	http.ServeFile(w, r, fmt.Sprintf("%s/discord.txt", settings.Current.StaticLocation))
}

func llms(w http.ResponseWriter, r *http.Request) {
	http.ServeFile(w, r, fmt.Sprintf("%s/llms.txt", settings.Current.StaticLocation))
}

func mux(w http.ResponseWriter, r *http.Request) {
	// slog.Info("Request", slog.String("URL", r.URL.String()))
	if r.URL.String() == "/favicon.ico" {
		http.ServeFile(w, r, fmt.Sprintf("%s/favicon.ico", settings.Current.StaticLocation))
	}
	if strings.HasPrefix(r.URL.String(), "/static") {
		var filePath = strings.Replace(r.URL.String(), "/static", settings.Current.StaticLocation, 1)
		http.ServeFile(w, r, filePath)
		return
	}
	common(w, r)
}

func common(w http.ResponseWriter, r *http.Request) {
	var indexArticle, indexErr = getTemplate("index.html")
	if indexErr != nil {
		slog.Error("Failed to parse the template", slog.Any("Error", indexErr))
		w.WriteHeader(http.StatusInternalServerError)
		return
	}
	var recentArticles, dbErr = index.GetAllArticles()
	if dbErr != nil {
		slog.Error("Failed to get recent articles from database", slog.Any("Error", dbErr))
		w.WriteHeader(http.StatusInternalServerError)
		return
	}
	executeIndexTemplate(IndexTemplateContents{
		LastArticles: recentArticles,
		Content: indexArticle,
	}, w)
}

func test(w http.ResponseWriter, r *http.Request) {
	var requestedName = r.PathValue("name")
	if len(requestedName) < 1 {
		w.WriteHeader(http.StatusNotFound)
		return
	}
	var article, dbErr = index.GetArticleByName(requestedName)
	if dbErr != nil {
		slog.Error("Failed to get an article from db", slog.Any("Error", dbErr))
		w.WriteHeader(http.StatusInternalServerError)
		return
	}
	if len(article.DisplayName) < 1 {
		w.WriteHeader(http.StatusNotFound)
		return
	}
	var contents, fileErr = getTemplate(article.FileName)
	if fileErr != nil {
		w.WriteHeader(http.StatusNotFound)
		return
	}
	var recentArticles, err = index.GetAllArticles()
	if err != nil {
		slog.Error("Failed to get recent articles from database", slog.Any("Error", err))
		w.WriteHeader(http.StatusInternalServerError)
		return
	}
	executeIndexTemplate(IndexTemplateContents{
		LastArticles: recentArticles,
		Content: contents,
		Tags: article.Tags,
	}, w)
}