// internal/handlers/template/templatedata.go
package templateHandler

import (
	"net/http"

	messageStorage "synlotto-website/internal/storage/messages"
	notificationStorage "synlotto-website/internal/storage/notifications"
	usersStorage "synlotto-website/internal/storage/users"

	"synlotto-website/internal/models"
	"synlotto-website/internal/platform/bootstrap"
	"synlotto-website/internal/platform/sessionkeys"
)

// BuildTemplateData aggregates common UI data (user, notifications, messages)
// from the current SCS session + DB.
func BuildTemplateData(app *bootstrap.App, w http.ResponseWriter, r *http.Request) models.TemplateData {
	sm := app.SessionManager
	ctx := r.Context()

	var (
		user              *models.User
		isAdmin           bool
		notificationCount int
		notifications     []models.Notification
		messageCount      int
		messages          []models.Message
	)

	// Read user_id from SCS (may be int or int64 depending on writes)
	if v := sm.Get(ctx, sessionkeys.UserID); v != nil {
		var uid int64
		switch t := v.(type) {
		case int64:
			uid = t
		case int:
			uid = int64(t)
		}

		if uid > 0 {
			if u := usersStorage.GetUserByID(app.DB, int(uid)); u != nil {
				user = u
				isAdmin = u.IsAdmin
				notificationCount = notificationStorage.GetNotificationCount(app.DB, int(u.Id))
				notifications = notificationStorage.GetRecentNotifications(app.DB, int(u.Id), 15)
				messageCount, _ = messageStorage.GetMessageCount(app.DB, int(u.Id))
				messages = messageStorage.GetRecentMessages(app.DB, int(u.Id), 15)
			}
		}
	}

	return models.TemplateData{
		User:              user,
		IsAdmin:           isAdmin,
		NotificationCount: notificationCount,
		Notifications:     notifications,
		MessageCount:      messageCount,
		Messages:          messages,
	}
}