use crate::AppState;
use axum::{extract::{Path, State}, http::StatusCode, response::IntoResponse, routing::get, Json, Router};
use chrono::{DateTime, Utc};
use serde::Serialize;
use uuid::Uuid;

#[derive(Serialize)]
pub struct AdminDeveloperList {
    pub id: Uuid,
    pub user_id: Uuid,
    pub first_name: String,
    pub last_name: String,
    pub email: String,
    pub phone: Option<String>,
    pub status: String,
    pub bio: Option<String>,
    pub experience_years: Option<i32>,
    pub custom_data: serde_json::Value,
    pub created_at: DateTime<Utc>,
    pub updated_at: DateTime<Utc>,
}

type AdminDeveloperDetail = AdminDeveloperList;

pub fn router() -> Router<AppState> {
    Router::new()
        .route("/", get(list_developers))
        .route("/{id}", get(get_developer))
}

async fn list_developers(
    State(state): State<AppState>,
) -> Result<impl IntoResponse, (StatusCode, String)> {
    let developers = sqlx::query_as!(
        AdminDeveloperList,
        r#"
            SELECT 
                d.id, d.user_id, d.bio, d.experience_years, d.custom_data,
                d.created_at, d.updated_at,
                u.first_name, u.last_name, u.email, u.phone, u.status
            FROM developer_profiles d
            JOIN users u ON d.user_id = u.id
            ORDER BY d.created_at DESC
            LIMIT 100
        "#
    )
    .fetch_all(&state.pool)
    .await
    .map_err(|e| (StatusCode::INTERNAL_SERVER_ERROR, format!("DB error: {e}")))?;

    Ok(Json(developers))
}

async fn get_developer(
    State(state): State<AppState>,
    Path(id): Path<Uuid>,
) -> Result<impl IntoResponse, (StatusCode, String)> {
    let developer = sqlx::query_as!(
        AdminDeveloperDetail,
        r#"
            SELECT 
                d.id, d.user_id, d.bio, d.experience_years, d.custom_data,
                d.created_at, d.updated_at,
                u.first_name, u.last_name, u.email, u.phone, u.status
            FROM developer_profiles d
            JOIN users u ON d.user_id = u.id
            WHERE d.id = $1
        "#,
        id
    )
    .fetch_optional(&state.pool)
    .await
    .map_err(|e| (StatusCode::INTERNAL_SERVER_ERROR, format!("DB error: {e}")))?;

    match developer {
        Some(d) => Ok(Json(d)),
        None => Err((StatusCode::NOT_FOUND, "Developer not found".to_string())),
    }
}