package main

import (
	"context"
	"embed"
	"fmt"
	"html/template"
	"net/http"
	"strings"

	"github.com/nbd-wtf/go-nostr"
)

// embed ui files

//go:embed ui/dist/*
var dist embed.FS

func inviteTreeHandler(w http.ResponseWriter, r *http.Request) {
	formattedInviteData := buildHTMLTree(whitelist, "")

	data := map[string]interface{}{
		"Relayname":        relayName,
		"Relaydescription": relayDescription,
		"Pagetitle":        "Invite Hierarchy",
		"Pagecontent": `
		<input type="text" id="inviteuser-input" placeholder="npub1..." /><button class="inviteuser">Invite!</button>
		` + formattedInviteData,
	}

	tmpl, err := template.ParseFS(dist, "ui/dist/index.html")
	if err != nil {
		http.Error(w, "Error parsing template: "+err.Error(), http.StatusInternalServerError)
		return
	}

	err = tmpl.Execute(w, data)
	if err != nil {
		http.Error(w, "Error executing template: "+err.Error(), http.StatusInternalServerError)
		return
	}
}

func reportsViewerHandler(w http.ResponseWriter, r *http.Request) {
	var formattedReportsData template.HTML = ""

	events, _ := db.QueryEvents(context.Background(), nostr.Filter{
		Kinds: []int{1984},
		Limit: 52,
	})

	type Report struct {
		ID         string
		ByUser     string
		AboutUser  string
		AboutEvent string
		Type       string
		Content    string
	}

	for ev := range events {
		pTag := ev.Tags.GetFirst([]string{"p"})

		eTag := ev.Tags.GetFirst([]string{"e"})
		if pTag != nil {
			var typeReport = eTag.Relay()[6:]
			if typeReport == "" {
				typeReport = pTag.Relay()[6:]
			}
			report := Report{
				ID:         ev.ID,
				ByUser:     ev.PubKey,
				AboutUser:  pTag.Value(),
				AboutEvent: eTag.Value(),
				Type:       typeReport,
				Content:    ev.Content,
			}
			// get AboutEvent content, note1 ect
			formattedReportsData += template.HTML(fmt.Sprintf(`
			<div>
			<p><b>Report %v</b></p>
			<p>By User: <a class="user" href="nostr:%v">%v</a></p>
			<p>About User: <a class="user" href="nostr:%v">%v</a></p>`,
				report.ID,
				getUserInfo(context.Background(), report.ByUser).Npub,
				getUserInfo(context.Background(), report.ByUser).Name,
				getUserInfo(context.Background(), report.AboutUser).Npub,
				getUserInfo(context.Background(), report.AboutUser).Name,
			))
			if report.AboutEvent != "" {
				// fetch event data
				aboutEvents, _ := db.QueryEvents(context.TODO(), nostr.Filter{
					IDs: []string{report.AboutEvent},
				})
				for aboutEvent := range aboutEvents {
					formattedReportsData += template.HTML(fmt.Sprintf(`
					<p>
					About Event: <ul>
					<p>Kind: %v</p>
					<p>Tags: %v</p>
					<p>Content: %v</p>
					</ul>
					</p>`,
						template.HTMLEscaper(aboutEvent.Kind),
						template.HTMLEscaper(aboutEvent.Tags),
						template.HTMLEscaper(aboutEvent.Content),
					))
				}
			}
			formattedReportsData += template.HTML(fmt.Sprintf(`
			<p>Type: %v</p>`,
				report.Type,
			))
			if report.Content != "" {
				formattedReportsData += template.HTML(fmt.Sprintf(`
				<p>Content: %v</p>
				<div>
				<button data-actionarg='[["e", "%v"],["p", "%v"]]' class="removefromrelay">Ban Reported User and Remove Report</button>
				<button data-actionarg='[["e", "%v"]]' class="removefromrelay">Remove This Report</button>
				<button data-actionarg='[["p", "%v"]]' class="removefromrelay">Ban User who wrote report</button>
				</div>
				</div>
				<hr />`,
					template.HTMLEscaper(report.Content),
					template.HTMLEscaper(report.ID),
					template.HTMLEscaper(report.AboutUser),
					template.HTMLEscaper(report.ID),
					template.HTMLEscaper(report.ByUser),
				))
			}
		}
	}

	data := map[string]interface{}{
		"Relayname":        relayName,
		"Relaydescription": relayDescription,
		"Pagetitle":        "Reports Viewer",
		"Pagecontent":      formattedReportsData,
	}

	tmpl, err := template.ParseFS(dist, "ui/dist/index.html")
	if err != nil {
		http.Error(w, "Error parsing template: "+err.Error(), http.StatusInternalServerError)
		return
	}

	// Execute the template with the provided data and write it to the response
	err = tmpl.Execute(w, data)
	if err != nil {
		http.Error(w, "Error executing template: "+err.Error(), http.StatusInternalServerError)
		return
	}
}

func homePageHandler(w http.ResponseWriter, r *http.Request) {
	relayOwnerInfo := getUserInfo(context.Background(), relayPubkey)

	data := map[string]interface{}{
		"Relayname":        relayName,
		"Relaydescription": relayDescription,
		"Pagetitle":        "Info",
		"Pagecontent": template.HTML(fmt.Sprintf(`
		<div>Relay Name: %v</div>
		<div>Relay Description: %v</div>
		<div>Relay Owner: <a class="user" href="nostr:%v">%v</a></div>
		<div>Relay Alternative Contact: %v</div>
		<br />
		<div><sub>This relay uses <a target="_blank" rel="noopener noreferrer" href="https://github.com/github-tijlxyz/khatru-invite">Khatru Invite</a>, which is build with <a target="_blank" rel="noopener noreferrer" href="https://github.com/fiatjaf/khatru">Khatru</a></sub></div>
		`, relayName, relayDescription, relayOwnerInfo.Npub, relayOwnerInfo.Name, relayContact)),
	}

	tmpl, err := template.ParseFS(dist, "ui/dist/index.html")
	if err != nil {
		http.Error(w, "Error parsing template: "+err.Error(), http.StatusInternalServerError)
		return
	}

	err = tmpl.Execute(w, data)
	if err != nil {
		http.Error(w, "Error executing template: "+err.Error(), http.StatusInternalServerError)
		return
	}
}

func redirectHandler(w http.ResponseWriter, r *http.Request) {
	if strings.HasPrefix(r.URL.Path, "/assets") {
		staticHandler("ui/dist", w, r)
	} else if r.URL.Path == "/" {
		homePageHandler(w, r)
	}
}

func staticHandler(prefix string, w http.ResponseWriter, r *http.Request) {
	path := prefix + r.URL.Path

	data, err := dist.ReadFile(path)
	if err != nil {
		http.Error(w, http.StatusText(http.StatusNotFound), http.StatusNotFound)
		return
	}

	contentType := http.DetectContentType(data)
	if strings.HasSuffix(r.URL.Path, ".js") {
		contentType = "application/javascript"
	} else if strings.HasSuffix(r.URL.Path, ".css") {
		contentType = "text/css"
	}

	w.Header().Set("Content-Type", contentType)

	if _, err := w.Write(data); err != nil {
		http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
		return
	}
}