use axum::extract::{Query, State};
use axum::http::StatusCode;
use axum::Json;
use cm_db::repo::audit::Actor;
use cm_domain::AgentId;
use serde::{Deserialize, Serialize};
use serde_json::{json, Value};
use uuid::Uuid;

use crate::routes::claws::workspace_agent;
use crate::{ApiError, AppState, Authed};

#[derive(Serialize)]
pub struct DirectoryApp {
    pub id: &'static str,
    pub name: &'static str,
    pub description: &'static str,
    pub category: &'static str,
}

fn catalog() -> Vec<DirectoryApp> {
    vec![
        DirectoryApp {
            id: "gmail",
            name: "Gmail",
            description: "Read and draft email on your behalf.",
            category: "Email",
        },
        DirectoryApp {
            id: "google-calendar",
            name: "Google Calendar",
            description: "Check availability and schedule events.",
            category: "Calendar",
        },
        DirectoryApp {
            id: "google-drive",
            name: "Google Drive",
            description: "Search and read team documents.",
            category: "Storage",
        },
        DirectoryApp {
            id: "notion",
            name: "Notion",
            description: "Read and update pages and databases.",
            category: "Docs",
        },
        DirectoryApp {
            id: "linear",
            name: "Linear",
            description: "Track and file engineering issues.",
            category: "Project management",
        },
        DirectoryApp {
            id: "github",
            name: "GitHub",
            description: "Review repos, issues, and pull requests.",
            category: "Engineering",
        },
        DirectoryApp {
            id: "figma",
            name: "Figma",
            description: "Inspect design files and comments.",
            category: "Design",
        },
        DirectoryApp {
            id: "zoom",
            name: "Zoom",
            description: "Schedule and summarize meetings.",
            category: "Meetings",
        },
        DirectoryApp {
            id: "stripe",
            name: "Stripe",
            description: "Look up customers, invoices, and payments.",
            category: "Finance",
        },
        DirectoryApp {
            id: "hubspot",
            name: "HubSpot",
            description: "Manage contacts and deals.",
            category: "CRM",
        },
        DirectoryApp {
            id: "google-sheets",
            name: "Google Sheets",
            description: "Read and update spreadsheets.",
            category: "Docs",
        },
        DirectoryApp {
            id: "slack",
            name: "Slack",
            description: "Respond on @mention in your channels.",
            category: "Chat",
        },
        DirectoryApp {
            id: "telegram",
            name: "Telegram",
            description: "Send and receive messages.",
            category: "Chat",
        },
        DirectoryApp {
            id: "webhook",
            name: "HTTP / Webhook",
            description: "Call any HTTP endpoint.",
            category: "Developer",
        },
        DirectoryApp {
            id: "postgres",
            name: "Postgres",
            description: "Query your databases.",
            category: "Data",
        },
        DirectoryApp {
            id: "aws",
            name: "AWS",
            description: "Inspect cloud resources.",
            category: "Infrastructure",
        },
        DirectoryApp {
            id: "sendgrid",
            name: "SendGrid",
            description: "Deliver transactional email.",
            category: "Email",
        },
    ]
}

#[derive(Deserialize)]
pub struct DirectoryQuery {
    #[serde(rename = "clawId")]
    claw_id: Option<AgentId>,
}

/// GET /api/apps[?clawId=] — the connect directory (§8.2), with live
/// connection status when scoped to a claw.
pub async fn directory(
    State(state): State<AppState>,
    Authed(user): Authed,
    Query(query): Query<DirectoryQuery>,
) -> Result<Json<Vec<Value>>, ApiError> {
    let connections = match query.claw_id {
        Some(claw_id) => {
            let agent = workspace_agent(&state, &user, claw_id).await?;
            cm_db::repo::connections::list_for_agent(&state.pool, user.workspace_id, agent.id)
                .await?
        }
        None => Vec::new(),
    };
    let merged = catalog()
        .into_iter()
        .map(|app| {
            let connection = connections.iter().find(|c| c.provider == app.id);
            json!({
                "id": app.id,
                "name": app.name,
                "description": app.description,
                "category": app.category,
                "connected": connection.is_some(),
                "connection_id": connection.map(|c| c.id),
            })
        })
        .collect();
    Ok(Json(merged))
}

#[derive(Deserialize)]
pub struct ConnectRequest {
    #[serde(rename = "clawId")]
    claw_id: AgentId,
    provider: String,
    #[serde(rename = "authType")]
    auth_type: String,
    /// The API key / token (keys) or "user:password" (basic). Sent once,
    /// stored encrypted by the broker, never readable again.
    secret: String,
}

/// POST /api/apps/connect — custom app credentials (§10 Add Custom App,
/// keys/basic). OAuth and MCP-OAuth flows follow.
pub async fn connect(
    State(state): State<AppState>,
    Authed(user): Authed,
    Json(body): Json<ConnectRequest>,
) -> Result<(StatusCode, Json<Value>), ApiError> {
    if !matches!(body.auth_type.as_str(), "keys" | "basic") {
        return Err(ApiError::Conflict);
    }
    let agent = workspace_agent(&state, &user, body.claw_id).await?;
    let socket = state.broker_socket.as_ref().ok_or(ApiError::Internal)?;
    let mut broker = cm_secrets::BrokerClient::connect(socket)
        .await
        .map_err(|_| ApiError::Internal)?;
    let secret_ref = broker
        .store_secret(
            user.workspace_id,
            &format!("{}_{}", body.provider, body.auth_type),
            &body.secret,
        )
        .await
        .map_err(|_| ApiError::Internal)?;
    let connection = cm_db::repo::connections::insert(
        &state.pool,
        user.workspace_id,
        Some(agent.id),
        &body.provider,
        &body.auth_type,
        secret_ref,
    )
    .await?;
    cm_db::repo::audit::append(
        &state.pool,
        user.workspace_id,
        Actor::User(user.user_id),
        "app.connected",
        "app_connection",
        &connection.id.to_string(),
        json!({"provider": body.provider, "auth_type": body.auth_type}),
    )
    .await?;
    Ok((
        StatusCode::CREATED,
        Json(json!({"id": connection.id, "provider": connection.provider, "status": "connected"})),
    ))
}

#[derive(Deserialize)]
pub struct DisconnectRequest {
    #[serde(rename = "connectionId")]
    connection_id: Uuid,
}

/// POST /api/apps/disconnect
pub async fn disconnect(
    State(state): State<AppState>,
    Authed(user): Authed,
    Json(body): Json<DisconnectRequest>,
) -> Result<StatusCode, ApiError> {
    cm_db::repo::connections::disconnect(&state.pool, body.connection_id).await?;
    cm_db::repo::audit::append(
        &state.pool,
        user.workspace_id,
        Actor::User(user.user_id),
        "app.disconnected",
        "app_connection",
        &body.connection_id.to_string(),
        json!({}),
    )
    .await?;
    Ok(StatusCode::NO_CONTENT)
}