package main

import (
	"context"
	"encoding/json"
	"fmt"
	"html/template"
	"log"

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

func buildHTMLTree(entries []WhitelistEntry, invitedBy string) template.HTML {
	html := "<ul>"

	for _, entry := range entries {
		if entry.InvitedBy == invitedBy {
			user := getUserInfo(context.TODO(), entry.Pk)
			html += fmt.Sprintf(`
			<li>
			<a class="user" href="nostr:%s">%s</a>
			<a data-actionarg='[["p", "%v"]]' class="rembtn removefromrelay">x</a>
			%s
			</li>`, template.HTMLEscapeString(user.Npub),
				template.HTMLEscapeString(user.Name),
				entry.Pk,
				buildHTMLTree(entries, entry.Pk))
		}
	}

	html += "</ul>"
	return template.HTML(html)
}

func isPkInWhitelist(targetPk string) bool {
	for i := 0; i < len(whitelist); i++ {
		if whitelist[i].Pk == targetPk {
			return true
		}
	}
	return false
}

func deleteFromWhitelistRecursively(ctx context.Context, target string) {
	var updatedWhitelist []WhitelistEntry
	var queue []string

	// Remove from whitelist
	for _, user := range whitelist {
		if user.Pk != target {
			updatedWhitelist = append(updatedWhitelist, user)
		}
		if user.InvitedBy == target {
			queue = append(queue, user.Pk)
		}
	}
	whitelist = updatedWhitelist

	// Remove all events
	filter := nostr.Filter{
		Authors: []string{target},
	}
	events, _ := db.QueryEvents(ctx, filter)
	for ev := range events {
		err := db.DeleteEvent(ctx, ev)
		if err != nil {
			log.Println("error while deleting event", err)
		}
	}

	// Recursive
	for _, pk := range queue {
		deleteFromWhitelistRecursively(ctx, pk)
	}
}

func getProfileInfoFromJson(jsonStr string) (string, string) {
	fieldOrder := []string{"displayName", "display_name", "username", "name"}

	var data map[string]interface{}
	err := json.Unmarshal([]byte(jsonStr), &data)
	if err != nil {
		fmt.Println("Error parsing JSON:", err)
		return "", ""
	}

	var displayname string = "..."
	var picture string = ""

	for _, fieldName := range fieldOrder {
		if val, ok := data[fieldName]; ok {
			if strVal, ok := val.(string); ok && strVal != "" {
				if fieldName == "picture" {
					picture = strVal
				}
				if fieldName == "name" {
					displayname = strVal
				} else if displayname == "" {
					displayname = strVal
				}
			}
		}
	}

	return displayname, picture
}