use actix_web::{HttpResponse, web};
use serde::Deserialize;
use utoipa::IntoParams;

use crate::api::response::{ApiErrorResponse, ApiResponse};
use crate::error::AppError;
use crate::models::repos::RepoCommitComment;
use crate::service::AppService;
use crate::service::repo::commit_status::CreateCommitCommentParams;
use crate::session::Session;

#[derive(Debug, Deserialize, IntoParams)]
pub struct PathParams {
    /// Workspace name (unique identifier)
    pub workspace_name: String,
    /// Repository name (unique within the workspace)
    pub repo_name: String,
}

/// Create a commit comment
///
/// Creates a new comment on a specific commit. Comments can be general or inline (attached to a specific file and line).
/// Requires Write role or higher in the repository.
///
/// Parameters:
/// - commit_sha: Commit SHA to comment on (must exist in repository)
/// - body: Comment body in markdown format (1-10000 characters)
/// - path: File path for inline comments (optional)
/// - line: Line number for inline comments (optional, requires path)
///
/// Effects:
/// - Comment is attached to the commit
/// - Comment author receives notifications for replies
/// - Inline comments appear in code review interfaces
///
/// Returns the created comment with metadata including ID and timestamps.
#[utoipa::path(
    post,
    path = "/api/v1/workspaces/{workspace_name}/repos/{repo_name}/comments",
    tag = "Repos",
    operation_id = "repoCreateCommitComment",
    params(PathParams),
    request_body(
        content = CreateCommitCommentParams,
        description = "Commit comment creation parameters",
        content_type = "application/json"
    ),
    responses(
        (status = 201, description = "Commit comment created successfully. Returns the newly created comment with metadata.", body = ApiResponse<RepoCommitComment>),
        (status = 400, description = "Invalid parameters: body too long, line without path, or commit doesn't exist", body = ApiErrorResponse),
        (status = 401, description = "Authentication required or session expired", body = ApiErrorResponse),
        (status = 403, description = "Insufficient permissions (requires Write role or higher)", body = ApiErrorResponse),
        (status = 404, description = "Repository, workspace, commit, or file path not found", body = ApiErrorResponse),
        (status = 500, description = "Internal server error", body = ApiErrorResponse),
    ),
    security(
        ("session_cookie" = [])
    )
)]
pub async fn create_commit_comment(
    service: web::Data<AppService>,
    session: Session,
    path: web::Path<PathParams>,
    params: web::Json<CreateCommitCommentParams>,
) -> Result<HttpResponse, AppError> {
    let comment = service
        .repo
        .repo_create_commit_comment(
            &session,
            &path.workspace_name,
            &path.repo_name,
            params.into_inner(),
        )
        .await?;

    Ok(HttpResponse::Created().json(ApiResponse::new(comment)))
}