//! Ekstre içe aktarma: öneri (tür/kategori/kural), arşiv dönemi, iade, gelir, yoksay,
//! tekrar tespiti, kapalı/gelecek dönem engeli, arşiv kuralları.

mod common;

use axum::http::StatusCode;
use common::{Session, TestApp};
use serde_json::{Value, json};

async fn id_by(app: &TestApp, s: &Session, path: &str, name: &str) -> String {
    let (_, list) = app.get(path, s).await;
    list.as_array()
        .unwrap()
        .iter()
        .find(|c| c["name"] == name)
        .unwrap()["id"]
        .as_str()
        .unwrap()
        .to_string()
}

fn row(date: &str, desc: &str, amount: i64, dir: &str) -> Value {
    json!({ "date": date, "description": desc, "amount": amount, "direction": dir })
}

async fn preview(app: &TestApp, s: &Session, source: &str, rows: &[Value]) -> Value {
    let (st, b) = app
        .post(
            "/bank-import/preview",
            s,
            json!({ "source": source, "rows": rows }),
        )
        .await;
    assert_eq!(st, StatusCode::OK, "{b}");
    b
}

async fn commit(app: &TestApp, s: &Session, pm: Option<&str>, rows: Vec<Value>) -> Value {
    let (st, b) = app
        .post(
            "/bank-import/commit",
            s,
            json!({ "payment_method_id": pm, "rows": rows }),
        )
        .await;
    assert_eq!(st, StatusCode::OK, "{b}");
    b
}

fn with(mut r: Value, kind: &str, cat: Option<&str>) -> Value {
    r["kind"] = json!(kind);
    if let Some(c) = cat {
        r["category_id"] = json!(c);
    }
    r
}

#[tokio::test]
async fn card_statement_with_archive_refund_and_rules() {
    let app = TestApp::new().await;
    let s = app.register("Test", None).await;
    let market = id_by(&app, &s, "/categories", "Market").await;
    let kart = id_by(&app, &s, "/payment-methods", "Kredi Kartı").await;
    // Ekim kapalı, Kasım açık
    let (_, oct) = app
        .post(
            "/periods",
            &s,
            json!({ "start_date": "2026-10-01", "end_date": "2026-11-01" }),
        )
        .await;
    let oct = oct["id"].as_str().unwrap().to_string();
    app.post(&format!("/periods/{oct}/close"), &s, json!({}))
        .await;
    let (_, nov) = app
        .post(
            "/periods",
            &s,
            json!({ "start_date": "2026-11-01", "end_date": "2026-12-01" }),
        )
        .await;
    let nov = nov["id"].as_str().unwrap().to_string();

    let rows = vec![
        row("2026-09-10", "MİGROS 1234 İSTANBUL TR", 45_000, "out"),
        row("2026-09-12", "IADE MIGROS ISTANBUL", 10_000, "in"),
        row("2026-09-30", "ÖDEMENİZ İÇİN TEŞEKKÜRLER", 500_000, "in"),
        row("2026-11-05", "A101 MAGAZACILIK", 20_000, "out"),
        row("2099-12-20", "GELECEK", 1_000, "out"),
        row("2026-10-05", "EKIM", 1_000, "out"),
    ];
    let p = preview(&app, &s, "card", &rows).await;
    let kinds: Vec<&str> = p["rows"]
        .as_array()
        .unwrap()
        .iter()
        .map(|r| r["kind"].as_str().unwrap())
        .collect();
    assert_eq!(
        kinds,
        [
            "expense", "refund", "ignore", "expense", "expense", "expense"
        ]
    );
    assert_eq!(p["rows"][0]["period"], "archive");
    assert_eq!(p["rows"][0]["period_name"], "Eylül 2026");
    assert_eq!(p["rows"][3]["period"], "existing");
    assert_eq!(p["rows"][3]["period_name"], "Kasım 2026");
    assert_eq!(p["rows"][4]["message"], "Gelecek tarihli satır");
    assert_eq!(
        p["rows"][5]["message"],
        "Dönem kapalı (Ekim 2026); düzeltme için yeniden açın"
    );
    assert_eq!(
        p["archives"],
        json!([{ "name": "Eylül 2026", "start_date": "2026-09-01", "last_date": "2026-09-30" }])
    );
    assert_eq!(p["rows"][0]["from_rule"], false);

    // Aktar: kullanıcı seçimleri
    let chosen = vec![
        with(rows[0].clone(), "expense", Some(&market)),
        with(rows[1].clone(), "refund", Some(&market)),
        with(rows[2].clone(), "ignore", None),
        with(rows[3].clone(), "expense", Some(&market)),
        with(rows[4].clone(), "expense", Some(&market)),
        with(rows[5].clone(), "expense", Some(&market)),
    ];
    let r = commit(&app, &s, Some(&kart), chosen.clone()).await;
    assert_eq!(
        (
            r["entries"].as_u64(),
            r["refunds"].as_u64(),
            r["ignored"].as_u64()
        ),
        (Some(2), Some(1), Some(1))
    );
    assert_eq!(r["archives"], json!(["Eylül 2026"]));
    assert_eq!(
        r["errors"]
            .as_array()
            .unwrap()
            .iter()
            .map(|e| e["index"].as_u64().unwrap())
            .collect::<Vec<_>>(),
        [4, 5]
    );

    // Arşiv dönemi: Eylül, net harcama 450 − 100 = 350
    let (_, periods) = app.get("/periods", &s).await;
    let sep = periods
        .as_array()
        .unwrap()
        .iter()
        .find(|p| p["name"] == "Eylül 2026")
        .unwrap()
        .clone();
    assert_eq!(sep["status"], "archived");
    let sep_id = sep["id"].as_str().unwrap();
    let (_, sum) = app.get(&format!("/periods/{sep_id}/summary"), &s).await;
    assert_eq!(sum["spent_total"], 35_000, "iade harcamadan düşer");
    let (_, entries) = app.get(&format!("/periods/{sep_id}/entries"), &s).await;
    let refund = entries
        .as_array()
        .unwrap()
        .iter()
        .find(|e| e["amount"] == -10_000)
        .unwrap()
        .clone();
    assert_eq!(refund["payment_method_id"], kart.as_str());
    assert_eq!(refund["description"], "IADE MIGROS ISTANBUL");
    let (_, nov_entries) = app.get(&format!("/periods/{nov}/entries"), &s).await;
    assert_eq!(nov_entries.as_array().unwrap().len(), 1);

    // Aynı ekstre tekrar: öğrenilen kural + tekrar işareti; aktarma çift kayıt yapmaz
    let p = preview(&app, &s, "card", &rows).await;
    assert_eq!(p["rows"][0]["from_rule"], true);
    assert_eq!(p["rows"][0]["category_id"], market.as_str());
    assert_eq!(p["rows"][1]["kind"], "refund");
    assert_eq!(p["rows"][2]["kind"], "ignore", "yoksay kuralı da öğrenildi");
    assert_eq!(
        p["rows"]
            .as_array()
            .unwrap()
            .iter()
            .map(|r| r["duplicate"].as_bool().unwrap())
            .collect::<Vec<_>>(),
        [true, true, false, true, false, false]
    );
    assert_eq!(p["archives"], json!([]), "Eylül artık var");
    let r = commit(&app, &s, Some(&kart), chosen).await;
    assert_eq!(
        (r["entries"].as_u64(), r["duplicates"].as_u64()),
        (Some(0), Some(3))
    );

    // İade düzenlemede eksi kalır
    let rid = refund["id"].as_str().unwrap();
    let (st, _) = app
        .patch(&format!("/entries/{rid}"), &s, json!({ "amount": 5_000 }))
        .await;
    assert_eq!(st, StatusCode::BAD_REQUEST);
    let (st, e) = app
        .patch(&format!("/entries/{rid}"), &s, json!({ "amount": -5_000 }))
        .await;
    assert_eq!(st, StatusCode::OK, "{e}");

    // Arşiv kapatılmaz; öneriler arşivi kullanır (Ekim 0 + Eylül 400 net) / 2 dönem
    let (st, b) = app
        .post(&format!("/periods/{sep_id}/close"), &s, json!({}))
        .await;
    assert_eq!(st, StatusCode::CONFLICT, "{b}");
    let (_, sug) = app
        .get(&format!("/periods/{nov}/budget/suggestion?method=avg3"), &s)
        .await;
    assert_eq!(sug["available"], true, "{sug}");
    assert_eq!(sug["amounts"]["needs"], 20_000, "(450 − 50) / 2");

    // Başka hane kuralları görmez
    let other = app.register("Diger", None).await;
    let p = preview(&app, &other, "card", &rows[..1]).await;
    assert_eq!(p["rows"][0]["from_rule"], false);
    assert_eq!(p["rows"][0]["duplicate"], false);
    app.cleanup().await;
}

#[tokio::test]
async fn account_statement_income_and_transfers() {
    let app = TestApp::new().await;
    let s = app.register("Test", None).await;
    let fatura = id_by(&app, &s, "/categories", "Faturalar").await;
    let rows = vec![
        row("2026-08-01", "MAAŞ ÖDEMESİ ACME A.Ş.", 4_500_000, "in"),
        row("2026-08-05", "KREDİ KARTI ÖDEMESİ", 1_200_000, "out"),
        row("2026-08-07", "ELEKTRIK FATURASI", 85_000, "out"),
        row("2026-08-31", "HESAPLAR ARASI VİRMAN", 100_000, "out"),
    ];
    let p = preview(&app, &s, "account", &rows).await;
    let kinds: Vec<&str> = p["rows"]
        .as_array()
        .unwrap()
        .iter()
        .map(|r| r["kind"].as_str().unwrap())
        .collect();
    assert_eq!(kinds, ["income", "ignore", "expense", "ignore"]);

    let r = commit(
        &app,
        &s,
        None,
        vec![
            with(rows[0].clone(), "income", None),
            with(rows[1].clone(), "ignore", None),
            with(rows[2].clone(), "expense", Some(&fatura)),
            with(rows[3].clone(), "ignore", None),
        ],
    )
    .await;
    assert_eq!(
        (
            r["incomes"].as_u64(),
            r["entries"].as_u64(),
            r["ignored"].as_u64()
        ),
        (Some(1), Some(1), Some(2))
    );
    let (_, periods) = app.get("/periods", &s).await;
    let aug = periods
        .as_array()
        .unwrap()
        .iter()
        .find(|p| p["name"] == "Ağustos 2026")
        .unwrap()["id"]
        .as_str()
        .unwrap()
        .to_string();
    let (_, sum) = app.get(&format!("/periods/{aug}/summary"), &s).await;
    assert_eq!(sum["income_total"], 4_500_000);
    assert_eq!(sum["spent_total"], 85_000);
    let (_, items) = app.get(&format!("/periods/{aug}/plan-items"), &s).await;
    assert_eq!(items[0]["name"], "MAAŞ ÖDEMESİ ACME A.Ş.");
    assert_eq!(items[0]["date"], "2026-08-01");
    // Gelir de tekrar etmez
    let p = preview(&app, &s, "account", &rows[..1]).await;
    assert_eq!(p["rows"][0]["duplicate"], true);

    // Kategori seçilmemiş harcama → satır hatası; boş istek → 400
    let r = commit(
        &app,
        &s,
        None,
        vec![with(row("2026-08-09", "SU", 1_000, "out"), "expense", None)],
    )
    .await;
    assert_eq!(r["errors"][0]["message"], "Kategori seçin");
    let (st, _) = app
        .post(
            "/bank-import/preview",
            &s,
            json!({ "source": "card", "rows": [] }),
        )
        .await;
    assert_eq!(st, StatusCode::BAD_REQUEST);
    app.cleanup().await;
}

#[tokio::test]
async fn archives_are_skipped_in_the_carryover_chain() {
    let app = TestApp::new().await;
    let s = app.register("Test", None).await;
    let market = id_by(&app, &s, "/categories", "Market").await;
    // Ekim: gelir 10.000, 5.000 birikime → 5.000 artı devreder (bağlanacak dönem yok)
    let (_, oct) = app
        .post(
            "/periods",
            &s,
            json!({ "start_date": "2026-10-01", "end_date": "2026-11-01" }),
        )
        .await;
    let oct = oct["id"].as_str().unwrap().to_string();
    app.post(
        &format!("/periods/{oct}/plan-items"),
        &s,
        json!({ "kind": "income", "name": "Maaş", "amount": 1_000_000 }),
    )
    .await;
    app.post(
        &format!("/periods/{oct}/close"),
        &s,
        json!({ "to_savings": 500_000 }),
    )
    .await;

    // Kasım ekstresi → Kasım arşiv dönemi
    let r = commit(
        &app,
        &s,
        None,
        vec![with(
            row("2026-11-03", "MIGROS", 10_000, "out"),
            "expense",
            Some(&market),
        )],
    )
    .await;
    assert_eq!(r["archives"], json!(["Kasım 2026"]));

    // Aralık açılır: önceki (devir) dönemi arşiv değil Ekim → artı Aralık'a bağlanır
    let (st, dec) = app
        .post(
            "/periods",
            &s,
            json!({ "start_date": "2026-12-01", "end_date": "2027-01-01" }),
        )
        .await;
    assert_eq!(st, StatusCode::CREATED, "{dec}");
    let dec = dec["id"].as_str().unwrap().to_string();
    let (_, sum) = app.get(&format!("/periods/{dec}/summary"), &s).await;
    assert_eq!(sum["carryover_surplus"], 500_000);

    // Ekim yeniden açılıp kapatılırsa yeni devir yine Aralık'a (arşiv Kasım değil)
    app.post(&format!("/periods/{oct}/reopen"), &s, json!({}))
        .await;
    let (st, b) = app
        .post(
            &format!("/periods/{oct}/close"),
            &s,
            json!({ "to_savings": 400_000 }),
        )
        .await;
    assert_eq!(st, StatusCode::OK, "{b}");
    assert_eq!(b["carryover"]["to_period_id"], dec.as_str());
    let (_, sum) = app.get(&format!("/periods/{dec}/summary"), &s).await;
    assert_eq!(sum["carryover_surplus"], 600_000);
    app.cleanup().await;
}