//! End-to-end HTTP tests against a live app + Postgres.
//!
//! Run with a throwaway database:
//!   TEST_DATABASE_URL=postgres://shoplist:shoplist@localhost:5432/shoplist_test \
//!     cargo test --test api
//! Without `TEST_DATABASE_URL` every test skips (see `common::spawn`).

mod common;

use serde_json::{json, Value};

/// Register a brand-new user and leave the client logged in. Returns the email.
async fn register_user(app: &common::TestApp) -> String {
    let email = app.unique_email();
    let res = app
        .client
        .post(app.url("/auth/register"))
        .json(&json!({ "email": email, "password": "supersecret123" }))
        .send()
        .await
        .unwrap();
    assert_eq!(res.status(), 201, "register should create the user");
    email
}

#[tokio::test]
async fn health_is_ok() {
    let app = test_app!();
    let res = app.client.get(app.url("/health")).send().await.unwrap();
    assert_eq!(res.status(), 200);
    let body: Value = res.json().await.unwrap();
    assert_eq!(body["status"], "ok");
}

#[tokio::test]
async fn register_login_me_logout_flow() {
    let app = test_app!();
    let email = register_user(&app).await;

    // Cookie from register authenticates /me.
    let me: Value = app
        .client
        .get(app.url("/auth/me"))
        .send()
        .await
        .unwrap()
        .json()
        .await
        .unwrap();
    assert_eq!(me["user"]["email"], email);
    assert_eq!(me["user"]["email_verified"], false);
    assert_eq!(me["settings"]["currency"], "EUR");

    // Logout clears the session.
    let res = app
        .client
        .post(app.url("/auth/logout"))
        .send()
        .await
        .unwrap();
    assert_eq!(res.status(), 204);
    let res = app.client.get(app.url("/auth/me")).send().await.unwrap();
    assert_eq!(res.status(), 401, "me must reject after logout");
}

#[tokio::test]
async fn duplicate_registration_conflicts() {
    let app = test_app!();
    let email = app.unique_email();
    let body = json!({ "email": email, "password": "supersecret123" });

    let first = app
        .client
        .post(app.url("/auth/register"))
        .json(&body)
        .send()
        .await
        .unwrap();
    assert_eq!(first.status(), 201);

    let second = app
        .client
        .post(app.url("/auth/register"))
        .json(&body)
        .send()
        .await
        .unwrap();
    assert_eq!(second.status(), 409, "same email must conflict");
}

#[tokio::test]
async fn register_validates_input() {
    let app = test_app!();
    // Bad email + too-short password => 422 Validation.
    let res = app
        .client
        .post(app.url("/auth/register"))
        .json(&json!({ "email": "nope", "password": "short" }))
        .send()
        .await
        .unwrap();
    assert_eq!(res.status(), 422);
}

#[tokio::test]
async fn login_rejects_wrong_password() {
    let app = test_app!();
    let email = register_user(&app).await;
    let res = app
        .client
        .post(app.url("/auth/login"))
        .json(&json!({ "email": email, "password": "the-wrong-one" }))
        .send()
        .await
        .unwrap();
    assert_eq!(res.status(), 400);
}

#[tokio::test]
async fn protected_route_requires_auth() {
    let app = test_app!();
    // Fresh client, no cookies.
    let res = app.client.get(app.url("/lists")).send().await.unwrap();
    assert_eq!(res.status(), 401);
}

#[tokio::test]
async fn lists_and_items_crud() {
    let app = test_app!();
    register_user(&app).await;

    // Create a list.
    let list: Value = app
        .client
        .post(app.url("/lists"))
        .json(&json!({ "name": "Gadgets", "emoji": "🛒" }))
        .send()
        .await
        .unwrap()
        .json()
        .await
        .unwrap();
    assert_eq!(list["name"], "Gadgets");
    assert_eq!(list["role"], "owner");
    let list_id = list["id"].as_str().unwrap().to_string();

    // It shows up in the overview.
    let all: Value = app
        .client
        .get(app.url("/lists"))
        .send()
        .await
        .unwrap()
        .json()
        .await
        .unwrap();
    assert_eq!(all.as_array().unwrap().len(), 1);

    // Add an item.
    let item: Value = app
        .client
        .post(app.url(&format!("/lists/{list_id}/items")))
        .json(&json!({ "title": "Mechanical keyboard", "target_price": 99.99 }))
        .send()
        .await
        .unwrap()
        .json()
        .await
        .unwrap();
    assert_eq!(item["title"], "Mechanical keyboard");
    assert_eq!(item["status"], "coveted");
    let item_id = item["id"].as_str().unwrap().to_string();

    // Update its status.
    let updated: Value = app
        .client
        .patch(app.url(&format!("/items/{item_id}")))
        .json(&json!({ "status": "acquired" }))
        .send()
        .await
        .unwrap()
        .json()
        .await
        .unwrap();
    assert_eq!(updated["status"], "acquired");

    // Delete the item.
    let res = app
        .client
        .delete(app.url(&format!("/items/{item_id}")))
        .send()
        .await
        .unwrap();
    assert_eq!(res.status(), 200);
    let items: Value = app
        .client
        .get(app.url(&format!("/lists/{list_id}/items")))
        .send()
        .await
        .unwrap()
        .json()
        .await
        .unwrap();
    assert!(items.as_array().unwrap().is_empty());
}

#[tokio::test]
async fn share_link_exposes_public_read_only_view() {
    let app = test_app!();
    register_user(&app).await;

    let list: Value = app
        .client
        .post(app.url("/lists"))
        .json(&json!({ "name": "Wishlist" }))
        .send()
        .await
        .unwrap()
        .json()
        .await
        .unwrap();
    let list_id = list["id"].as_str().unwrap().to_string();

    app.client
        .post(app.url(&format!("/lists/{list_id}/items")))
        .json(&json!({ "title": "Telescope" }))
        .send()
        .await
        .unwrap();

    // Mint a share token.
    let shared: Value = app
        .client
        .post(app.url(&format!("/lists/{list_id}/share")))
        .json(&json!({}))
        .send()
        .await
        .unwrap()
        .json()
        .await
        .unwrap();
    let token = shared["share_token"].as_str().expect("share token minted");

    // Anonymous client can read it.
    let anon = reqwest::Client::new();
    let view: Value = anon
        .get(app.url(&format!("/shared/{token}")))
        .send()
        .await
        .unwrap()
        .json()
        .await
        .unwrap();
    assert_eq!(view["list"]["name"], "Wishlist");
    assert_eq!(view["items"][0]["title"], "Telescope");

    // A bogus token 404s.
    let res = anon
        .get(app.url("/shared/definitely-not-a-real-token"))
        .send()
        .await
        .unwrap();
    assert_eq!(res.status(), 404);
}