mod common;

use axum::http::StatusCode;
use common::*;

// ═══════════════════════════════════════════════════════════════════
// Role management: admin can change another user's role
// ═══════════════════════════════════════════════════════════════════

#[tokio::test]
async fn admin_can_change_user_role_to_admin() {
    let (app, pool) = build_test_app().await;
    let admin = admin_token(&app, &pool, "rolechangeadmin").await;
    let user_token = register_token(&app, "targetroleuser").await;

    // Get user's account ID
    let (_, me) = send(&app, get("/api/v1/auth/me", &user_token)).await;
    let user_id = me["id"].as_str().unwrap();

    // Admin promotes user to admin
    let (status, body) = send(
        &app,
        patch(
            &format!("/api/v1/accounts/{user_id}"),
            &admin,
            serde_json::json!({ "role": "admin" }),
        ),
    ).await;
    assert_eq!(status, StatusCode::OK, "admin should be able to change role: {body}");
    assert_eq!(body["role"], "admin");
}

#[tokio::test]
async fn admin_can_demote_user_role() {
    let (app, pool) = build_test_app().await;
    let admin = admin_token(&app, &pool, "demoteadmin").await;

    // Create a second admin
    let second_admin = admin_token(&app, &pool, "secondadmin").await;
    let (_, me) = send(&app, get("/api/v1/auth/me", &second_admin)).await;
    let second_id = me["id"].as_str().unwrap();

    // Demote to user
    let (status, body) = send(
        &app,
        patch(
            &format!("/api/v1/accounts/{second_id}"),
            &admin,
            serde_json::json!({ "role": "user" }),
        ),
    ).await;
    assert_eq!(status, StatusCode::OK, "admin should be able to demote: {body}");
    assert_eq!(body["role"], "user");
}

// ═══════════════════════════════════════════════════════════════════
// Security: user cannot escalate own role via self-update
// ═══════════════════════════════════════════════════════════════════

#[tokio::test]
async fn user_cannot_escalate_role_via_self_update() {
    let (app, _pool) = build_test_app().await;
    let token = register_token(&app, "escalateuser").await;

    let (_, me) = send(&app, get("/api/v1/auth/me", &token)).await;
    let user_id = me["id"].as_str().unwrap();

    // Try to escalate role to admin
    let (status, body) = send(
        &app,
        patch(
            &format!("/api/v1/accounts/{user_id}"),
            &token,
            serde_json::json!({ "role": "admin", "display_name": "Updated" }),
        ),
    ).await;
    // The update may succeed but role should be ignored
    if status == StatusCode::OK {
        // Verify role was NOT changed
        let (_, updated) = send(&app, get(&format!("/api/v1/accounts/{user_id}"), &token)).await;
        assert_ne!(updated["role"], "admin", "user should NOT be able to escalate own role: {updated}");
        assert_eq!(updated["display_name"], "Updated", "display_name should still update");
    }
    // If the endpoint rejects the role field entirely, that's also acceptable
}

// ═══════════════════════════════════════════════════════════════════
// Account status management: admin can disable/enable
// ═══════════════════════════════════════════════════════════════════

#[tokio::test]
async fn admin_can_disable_account() {
    let (app, pool) = build_test_app().await;
    let admin = admin_token(&app, &pool, "disableadmin").await;
    let user_token = register_token(&app, "disabletarget").await;

    let (_, me) = send(&app, get("/api/v1/auth/me", &user_token)).await;
    let user_id = me["id"].as_str().unwrap();

    // Admin disables user
    let (status, body) = send(
        &app,
        patch(
            &format!("/api/v1/accounts/{user_id}/status"),
            &admin,
            serde_json::json!({ "status": "disabled" }),
        ),
    ).await;
    assert_eq!(status, StatusCode::OK, "admin should be able to disable account: {body}");

    // Disabled user cannot log in
    let (status, _) = send(
        &app,
        post_public(
            "/api/v1/auth/login",
            serde_json::json!({ "username": "disabletarget", "password": DEFAULT_PASSWORD }),
        ),
    ).await;
    assert_eq!(status, StatusCode::FORBIDDEN, "disabled account should not be able to log in");
}

#[tokio::test]
async fn admin_can_reenable_account() {
    let (app, pool) = build_test_app().await;
    let admin = admin_token(&app, &pool, "reenableadmin").await;
    register(&app, "reenabletarget", "reenable@test.io", DEFAULT_PASSWORD).await;

    // Disable first
    let (_, me) = send(&app, get("/api/v1/auth/me", &admin)).await;
    // Get the target user's ID from accounts list
    let (_, list) = send(&app, get("/api/v1/accounts", &admin)).await;
    let items = list["items"].as_array().expect("accounts list");
    let target_id = items.iter()
        .find(|a| a["username"] == "reenabletarget")
        .map(|a| a["id"].as_str().unwrap())
        .expect("should find target user");

    // Disable
    send(
        &app,
        patch(
            &format!("/api/v1/accounts/{target_id}/status"),
            &admin,
            serde_json::json!({ "status": "disabled" }),
        ),
    ).await;

    // Re-enable
    let (status, _) = send(
        &app,
        patch(
            &format!("/api/v1/accounts/{target_id}/status"),
            &admin,
            serde_json::json!({ "status": "active" }),
        ),
    ).await;
    assert_eq!(status, StatusCode::OK, "admin should be able to re-enable account");

    // User can log in again
    let (status, _) = send(
        &app,
        post_public(
            "/api/v1/auth/login",
            serde_json::json!({ "username": "reenabletarget", "password": DEFAULT_PASSWORD }),
        ),
    ).await;
    assert_eq!(status, StatusCode::OK, "re-enabled account should be able to log in");
}

#[tokio::test]
async fn user_cannot_disable_others() {
    let (app, _pool) = build_test_app().await;
    let token = register_token(&app, "disableattacker").await;
    let victim_token = register_token(&app, "disablevictim").await;

    let (_, me) = send(&app, get("/api/v1/auth/me", &victim_token)).await;
    let victim_id = me["id"].as_str().unwrap();

    let (status, _) = send(
        &app,
        patch(
            &format!("/api/v1/accounts/{victim_id}/status"),
            &token,
            serde_json::json!({ "status": "disabled" }),
        ),
    ).await;
    assert_eq!(status, StatusCode::FORBIDDEN, "regular user should not be able to disable others");
}

// ═══════════════════════════════════════════════════════════════════
// Cross-account access control
// ═══════════════════════════════════════════════════════════════════

#[tokio::test]
async fn user_cannot_view_other_account_details() {
    let (app, _pool) = build_test_app().await;
    let token_a = register_token(&app, "viewerA").await;
    let token_b = register_token(&app, "viewerB").await;

    let (_, me_b) = send(&app, get("/api/v1/auth/me", &token_b)).await;
    let b_id = me_b["id"].as_str().unwrap();

    let (status, _) = send(&app, get(&format!("/api/v1/accounts/{b_id}"), &token_a)).await;
    assert_eq!(status, StatusCode::FORBIDDEN, "user should not see another user's account details");
}

#[tokio::test]
async fn admin_can_view_any_account() {
    let (app, pool) = build_test_app().await;
    let admin = admin_token(&app, &pool, "viewadmin").await;
    let user_token = register_token(&app, "viewtarget").await;

    let (_, me) = send(&app, get("/api/v1/auth/me", &user_token)).await;
    let user_id = me["id"].as_str().unwrap();

    let (status, body) = send(&app, get(&format!("/api/v1/accounts/{user_id}"), &admin)).await;
    assert_eq!(status, StatusCode::OK, "admin should be able to view any account: {body}");
    assert_eq!(body["username"], "viewtarget");
}

// ═══════════════════════════════════════════════════════════════════
// Operation logs are admin-only
// ═══════════════════════════════════════════════════════════════════

#[tokio::test]
async fn operation_logs_admin_can_list() {
    let (app, pool) = build_test_app().await;
    let admin = admin_token(&app, &pool, "logadmin").await;

    // Perform an action that generates a log
    send(&app, get("/api/v1/accounts", &admin)).await;

    let (status, body) = send(&app, get("/api/v1/logs/operations", &admin)).await;
    assert_eq!(status, StatusCode::OK, "admin should see operation logs: {body}");
    // Should be paginated
    assert!(body["items"].is_array() || body.is_array(), "logs should be array or paginated");
}