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::RepoCommitStatus;
use crate::service::AppService;
use crate::service::repo::commit_status::CreateCommitStatusParams;
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 status
///
/// Creates a new status check for a specific commit, typically used by CI/CD systems.
/// Requires Write role or higher in the repository.
///
/// Parameters:
/// - commit_sha: Commit SHA to attach the status to (must exist in repository)
/// - state: Status state ("pending", "success", "failure", "error")
/// - context: Status context name (e.g., "ci/build", "ci/test") - must be unique per commit
/// - description: Human-readable description of the status (optional, max 500 characters)
/// - target_url: URL with detailed information about the status (optional)
///
/// Effects:
/// - Status is attached to the commit
/// - Can be used by branch protection rules to enforce status checks
/// - Multiple statuses can exist for the same commit with different contexts
///
/// Returns the created status with metadata including ID and timestamps.
#[utoipa::path(
    post,
    path = "/api/v1/workspaces/{workspace_name}/repos/{repo_name}/statuses",
    tag = "Repos",
    operation_id = "repoCreateCommitStatus",
    params(PathParams),
    request_body(
        content = CreateCommitStatusParams,
        description = "Commit status creation parameters",
        content_type = "application/json"
    ),
    responses(
        (status = 201, description = "Commit status created successfully. Returns the newly created status with metadata.", body = ApiResponse<RepoCommitStatus>),
        (status = 400, description = "Invalid parameters: invalid state, context too long, 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, or commit not found", body = ApiErrorResponse),
        (status = 409, description = "Status with this context already exists for this commit (use update instead)", body = ApiErrorResponse),
        (status = 500, description = "Internal server error", body = ApiErrorResponse),
    ),
    security(
        ("session_cookie" = [])
    )
)]
pub async fn create_commit_status(
    service: web::Data<AppService>,
    session: Session,
    path: web::Path<PathParams>,
    params: web::Json<CreateCommitStatusParams>,
) -> Result<HttpResponse, AppError> {
    let status = service
        .repo
        .repo_create_commit_status(
            &session,
            &path.workspace_name,
            &path.repo_name,
            params.into_inner(),
        )
        .await?;

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