package handlers

import (
	"fmt"
	"net/http"
	"time"

	"sneak.berlin/go/webhooker/internal/database"
)

func (s *Handlers) HandleIndex() http.HandlerFunc {
	// Calculate server start time
	startTime := time.Now()

	return func(w http.ResponseWriter, req *http.Request) {
		// Calculate uptime
		uptime := time.Since(startTime)
		uptimeStr := formatUptime(uptime)

		// Get user count from database
		var userCount int64
		s.db.DB().Model(&database.User{}).Count(&userCount)

		// Prepare template data
		data := map[string]interface{}{
			"Version":   s.params.Globals.Version,
			"Uptime":    uptimeStr,
			"UserCount": userCount,
		}

		// Render the template
		s.renderTemplate(w, req, "index.html", data)
	}
}

// formatUptime formats a duration into a human-readable string
func formatUptime(d time.Duration) string {
	days := int(d.Hours()) / 24
	hours := int(d.Hours()) % 24
	minutes := int(d.Minutes()) % 60

	if days > 0 {
		return fmt.Sprintf("%dd %dh %dm", days, hours, minutes)
	}
	if hours > 0 {
		return fmt.Sprintf("%dh %dm", hours, minutes)
	}
	return fmt.Sprintf("%dm", minutes)
}