// comment_resolvers.go
package graph

import (
	"context"
	"fmt"
	"tailly_back_v2/internal/domain"
	"time"
)

type commentResolver struct{ *Resolver }

// Comment returns CommentResolver implementation.
func (r *Resolver) Comment() CommentResolver { return &commentResolver{r} }

// Post is the resolver for the post field.
func (r *commentResolver) Post(ctx context.Context, obj *domain.Comment) (*domain.Post, error) {
	if obj == nil {
		return nil, fmt.Errorf("comment is nil")
	}
	return r.Services.Post.GetByID(ctx, obj.PostID)
}

// Author is the resolver for the author field.
func (r *commentResolver) Author(ctx context.Context, obj *domain.Comment) (*domain.User, error) {
	if obj == nil {
		return nil, fmt.Errorf("comment is nil")
	}
	return r.Services.User.GetByID(ctx, obj.AuthorID)
}

// CreatedAt is the resolver for the createdAt field.
func (r *commentResolver) CreatedAt(ctx context.Context, obj *domain.Comment) (string, error) {
	if obj == nil {
		return "", fmt.Errorf("comment is nil")
	}
	return obj.CreatedAt.Format(time.RFC3339), nil
}

// UpdatedAt is the resolver for the updatedAt field.
func (r *commentResolver) UpdatedAt(ctx context.Context, obj *domain.Comment) (string, error) {
	if obj == nil {
		return "", fmt.Errorf("comment is nil")
	}
	return obj.UpdatedAt.Format(time.RFC3339), nil
}

// CreateComment is the resolver for the createComment field.
func (r *mutationResolver) CreateComment(ctx context.Context, postID int, content string) (*domain.Comment, error) {
	userID, err := getUserIDFromContext(ctx)
	if err != nil {
		return nil, err
	}

	return r.Services.Comment.Create(ctx, postID, userID, content)
}

// Comments is the resolver for the comments field.
func (r *queryResolver) Comments(ctx context.Context, postID int) ([]*domain.Comment, error) {
	return r.Services.Comment.GetByPostID(ctx, postID)
}

// UpdateComment is the resolver for the updateComment field.
func (r *mutationResolver) UpdateComment(ctx context.Context, id int, content string) (*domain.Comment, error) {
	userID, err := getUserIDFromContext(ctx)
	if err != nil {
		return nil, err
	}

	// Проверяем, что комментарий принадлежит пользователю
	comment, err := r.Services.Comment.GetByID(ctx, id)
	if err != nil {
		return nil, fmt.Errorf("comment not found")
	}

	if comment.AuthorID != userID {
		return nil, fmt.Errorf("unauthorized to update this comment")
	}

	return r.Services.Comment.Update(ctx, id, content)
}

// DeleteComment is the resolver for the deleteComment field.
func (r *mutationResolver) DeleteComment(ctx context.Context, id int) (bool, error) {
	userID, err := getUserIDFromContext(ctx)
	if err != nil {
		return false, err
	}

	// Проверяем, что комментарий принадлежит пользователю
	comment, err := r.Services.Comment.GetByID(ctx, id)
	if err != nil {
		return false, fmt.Errorf("comment not found")
	}

	if comment.AuthorID != userID {
		return false, fmt.Errorf("unauthorized to delete this comment")
	}

	if err := r.Services.Comment.Delete(ctx, id); err != nil {
		return false, err
	}

	return true, nil
}