use anyhow::Result;
use app_test_support::ChatGptAuthFixture;
use app_test_support::McpProcess;
use app_test_support::create_mock_responses_server_repeating_assistant;
use app_test_support::to_response;
use app_test_support::write_chatgpt_auth;
use codex_app_server_protocol::JSONRPCError;
use codex_app_server_protocol::JSONRPCResponse;
use codex_app_server_protocol::RequestId;
use codex_app_server_protocol::ReviewDelivery;
use codex_app_server_protocol::ReviewStartParams;
use codex_app_server_protocol::ReviewTarget;
use codex_app_server_protocol::ThreadStartParams;
use codex_app_server_protocol::ThreadStartResponse;
use codex_app_server_protocol::TurnStartParams;
use codex_app_server_protocol::UserInput as V2UserInput;
use codex_core::auth::AuthCredentialsStoreMode;
use pretty_assertions::assert_eq;
use std::path::Path;
use tempfile::TempDir;
use tokio::time::timeout;

const DEFAULT_READ_TIMEOUT: std::time::Duration = std::time::Duration::from_secs(10);
const INVALID_REQUEST_ERROR_CODE: i64 = -32600;

#[tokio::test]
async fn thread_start_requires_auth() -> Result<()> {
    let server = create_mock_responses_server_repeating_assistant("unused").await;
    let codex_home = TempDir::new()?;
    create_config_toml(codex_home.path(), &server.uri(), true)?;

    let mut mcp = McpProcess::new(codex_home.path()).await?;
    timeout(DEFAULT_READ_TIMEOUT, mcp.initialize()).await??;

    let request_id = mcp
        .send_thread_start_request(ThreadStartParams {
            model: Some("mock-model".to_string()),
            ..Default::default()
        })
        .await?;
    let error: JSONRPCError = timeout(
        DEFAULT_READ_TIMEOUT,
        mcp.read_stream_until_error_message(RequestId::Integer(request_id)),
    )
    .await??;
    assert_eq!(error.error.code, INVALID_REQUEST_ERROR_CODE);
    assert!(
        error.error.message.contains("authentication required"),
        "unexpected message: {}",
        error.error.message
    );

    Ok(())
}

#[tokio::test]
async fn turn_start_requires_auth_after_logout() -> Result<()> {
    let server = create_mock_responses_server_repeating_assistant("unused").await;
    let codex_home = TempDir::new()?;
    create_config_toml(codex_home.path(), &server.uri(), true)?;
    write_chatgpt_auth(
        codex_home.path(),
        ChatGptAuthFixture::new("access-token"),
        AuthCredentialsStoreMode::File,
    )?;

    let mut mcp = McpProcess::new(codex_home.path()).await?;
    timeout(DEFAULT_READ_TIMEOUT, mcp.initialize()).await??;
    let thread_req = mcp
        .send_thread_start_request(ThreadStartParams {
            model: Some("mock-model".to_string()),
            ..Default::default()
        })
        .await?;
    let thread_resp: JSONRPCResponse = timeout(
        DEFAULT_READ_TIMEOUT,
        mcp.read_stream_until_response_message(RequestId::Integer(thread_req)),
    )
    .await??;
    let ThreadStartResponse { thread, .. } = to_response(thread_resp)?;

    let logout_req = mcp.send_logout_account_request().await?;
    timeout(
        DEFAULT_READ_TIMEOUT,
        mcp.read_stream_until_response_message(RequestId::Integer(logout_req)),
    )
    .await??;
    timeout(
        DEFAULT_READ_TIMEOUT,
        mcp.read_stream_until_notification_message("account/updated"),
    )
    .await??;

    let turn_req = mcp
        .send_turn_start_request(TurnStartParams {
            thread_id: thread.id,
            input: vec![V2UserInput::Text {
                text: "Hello".to_string(),
                text_elements: Vec::new(),
            }],
            ..Default::default()
        })
        .await?;
    let error: JSONRPCError = timeout(
        DEFAULT_READ_TIMEOUT,
        mcp.read_stream_until_error_message(RequestId::Integer(turn_req)),
    )
    .await??;
    assert_eq!(error.error.code, INVALID_REQUEST_ERROR_CODE);
    assert!(
        error.error.message.contains("authentication required"),
        "unexpected message: {}",
        error.error.message
    );

    Ok(())
}

#[tokio::test]
async fn review_start_requires_auth_after_logout() -> Result<()> {
    let server = create_mock_responses_server_repeating_assistant("unused").await;
    let codex_home = TempDir::new()?;
    create_config_toml(codex_home.path(), &server.uri(), true)?;
    write_chatgpt_auth(
        codex_home.path(),
        ChatGptAuthFixture::new("access-token"),
        AuthCredentialsStoreMode::File,
    )?;

    let mut mcp = McpProcess::new(codex_home.path()).await?;
    timeout(DEFAULT_READ_TIMEOUT, mcp.initialize()).await??;
    let thread_req = mcp
        .send_thread_start_request(ThreadStartParams {
            model: Some("mock-model".to_string()),
            ..Default::default()
        })
        .await?;
    let thread_resp: JSONRPCResponse = timeout(
        DEFAULT_READ_TIMEOUT,
        mcp.read_stream_until_response_message(RequestId::Integer(thread_req)),
    )
    .await??;
    let ThreadStartResponse { thread, .. } = to_response(thread_resp)?;

    let logout_req = mcp.send_logout_account_request().await?;
    timeout(
        DEFAULT_READ_TIMEOUT,
        mcp.read_stream_until_response_message(RequestId::Integer(logout_req)),
    )
    .await??;
    timeout(
        DEFAULT_READ_TIMEOUT,
        mcp.read_stream_until_notification_message("account/updated"),
    )
    .await??;

    let review_req = mcp
        .send_review_start_request(ReviewStartParams {
            thread_id: thread.id,
            delivery: Some(ReviewDelivery::Inline),
            target: ReviewTarget::Custom {
                instructions: "review".to_string(),
            },
        })
        .await?;
    let error: JSONRPCError = timeout(
        DEFAULT_READ_TIMEOUT,
        mcp.read_stream_until_error_message(RequestId::Integer(review_req)),
    )
    .await??;
    assert_eq!(error.error.code, INVALID_REQUEST_ERROR_CODE);
    assert!(
        error.error.message.contains("authentication required"),
        "unexpected message: {}",
        error.error.message
    );

    Ok(())
}

fn create_config_toml(
    codex_home: &Path,
    server_uri: &str,
    requires_openai_auth: bool,
) -> std::io::Result<()> {
    let config_toml = codex_home.join("config.toml");
    std::fs::write(
        config_toml,
        format!(
            r#"
model = "mock-model"
approval_policy = "never"
sandbox_mode = "read-only"

model_provider = "mock_provider"

[model_providers.mock_provider]
name = "Mock provider for auth required tests"
base_url = "{server_uri}/v1"
wire_api = "responses"
requires_openai_auth = {requires_openai_auth}
request_max_retries = 0
stream_max_retries = 0
"#
        ),
    )
}