"""Integration tests for Marketplace Purchase Service, Escrow, and Fee Splitting.

docs/planning/economy.md US-4 (task bc90d3f481b4).
"""

import pytest
from fastapi.testclient import TestClient

from app.main import app
from app.services.purchase import purchase_service


def _register(client: TestClient, username: str) -> tuple[int, dict[str, str]]:
    resp = client.post(
        "/api/auth/register",
        json={
            "username": username,
            "email": f"{username}@example.com",
            "password": "secret123",
            "date_of_birth": "1990-01-01",
        },
    )
    assert resp.status_code == 201, resp.text
    token = resp.json()["access_token"]
    headers = {"Authorization": f"Bearer {token}"}
    me = client.get("/api/users/me", headers=headers)
    assert me.status_code == 200, me.text
    return me.json()["id"], headers


def test_fee_split_calculation():
    # 30% platform fee
    fee, net = purchase_service.compute_fee_split(100)
    assert fee == 30
    assert net == 70

    fee, net = purchase_service.compute_fee_split(250)
    assert fee == 75
    assert net == 175


def test_marketplace_purchase_atomic_flow():
    client = TestClient(app)
    seller_id, seller_headers = _register(client, "purchase_seller_1")
    buyer_id, buyer_headers = _register(client, "purchase_buyer_1")

    # 1. Seller creates catalog item and lists it for 200 Credits
    item_resp = client.post(
        "/api/marketplace/items",
        headers=seller_headers,
        json={
            "name": "Dragon Armor",
            "description": "Legendary chestplate",
            "item_type": "avatar_item",
        },
    )
    assert item_resp.status_code == 201, item_resp.text
    item_id = item_resp.json()["id"]

    list_resp = client.post(
        "/api/marketplace/listings",
        headers=seller_headers,
        json={
            "catalog_item_id": item_id,
            "price": 200,
        },
    )
    assert list_resp.status_code == 201, list_resp.text
    listing_id = list_resp.json()["id"]

    # 2. Seller cannot purchase own listing
    self_buy = client.post(
        f"/api/marketplace/listings/{listing_id}/purchase",
        headers=seller_headers,
    )
    assert self_buy.status_code == 400
    assert "own listing" in self_buy.text

    # 3. Buyer attempts purchase without enough credits -> 400
    poor_buy = client.post(
        f"/api/marketplace/listings/{listing_id}/purchase",
        headers=buyer_headers,
    )
    assert poor_buy.status_code == 400
    assert "Insufficient funds" in poor_buy.text

    # 4. Buyer purchases 500 Credits via payments API
    sess_resp = client.post(
        "/api/payments/purchase",
        headers=buyer_headers,
        json={"credits": 500},
    )
    assert sess_resp.status_code == 201, sess_resp.text
    sess_id = sess_resp.json()["session_id"]

    conf_resp = client.post(
        "/api/payments/confirm",
        headers=buyer_headers,
        json={"session_id": sess_id},
    )
    assert conf_resp.status_code == 200, conf_resp.text
    assert conf_resp.json()["new_balance"] == 500

    # 5. Buyer purchases listing for 200 Credits
    buy_headers = dict(buyer_headers)
    buy_headers["Idempotency-Key"] = "buy-test-key-1"
    buy_resp = client.post(
        f"/api/marketplace/listings/{listing_id}/purchase",
        headers=buy_headers,
    )
    assert buy_resp.status_code == 201, buy_resp.text
    purchase_data = buy_resp.json()
    assert purchase_data["price"] == 200
    assert purchase_data["platform_fee"] == 60
    assert purchase_data["seller_net"] == 140
    assert purchase_data["status"] == "pending_escrow"
    assert purchase_data["buyer_id"] == buyer_id
    assert purchase_data["seller_id"] == seller_id
    purchase_id = purchase_data["id"]

    # 6. Check buyer wallet balance: 500 - 200 = 300
    w_resp = client.get("/api/wallet", headers=buyer_headers)
    assert w_resp.status_code == 200
    assert w_resp.json()["balance"] == 300

    # 7. Check buyer has granted item in inventory
    inv_resp = client.get("/api/marketplace/items", headers=buyer_headers, params={"mine": "true"})
    assert inv_resp.status_code == 200
    my_items = inv_resp.json()
    assert any(i["name"] == "Dragon Armor" and i["owner_id"] == buyer_id for i in my_items)

    # 8. Listing is now sold and cannot be purchased again
    re_buy = client.post(
        f"/api/marketplace/listings/{listing_id}/purchase",
        headers=buyer_headers,
    )
    assert re_buy.status_code == 400
    assert "not active" in re_buy.text

    # 9. Seller's creator balance is pending escrow
    cb_resp = client.get("/api/marketplace/creator/balance", headers=seller_headers)
    assert cb_resp.status_code == 200, cb_resp.text
    cb = cb_resp.json()
    assert cb["pending"] == 140
    assert cb["available"] == 0

    # 10. List purchases
    p_resp = client.get("/api/marketplace/purchases", headers=buyer_headers)
    assert p_resp.status_code == 200
    assert any(p["id"] == purchase_id for p in p_resp.json())

    # 11. Escrow release
    rel_resp = client.post(
        f"/api/marketplace/purchases/{purchase_id}/release",
        headers=seller_headers,
    )
    assert rel_resp.status_code == 200, rel_resp.text
    assert rel_resp.json()["status"] == "completed"

    # Check seller's creator balance now shows available = 140
    cb_resp2 = client.get("/api/marketplace/creator/balance", headers=seller_headers)
    assert cb_resp2.status_code == 200
    cb2 = cb_resp2.json()
    assert cb2["pending"] == 0
    assert cb2["available"] == 140
    assert cb2["lifetime_earned"] == 140


def test_marketplace_refund():
    client = TestClient(app)
    seller_id, seller_headers = _register(client, "refund_seller_1")
    buyer_id, buyer_headers = _register(client, "refund_buyer_1")

    # Item & Listing
    item_resp = client.post(
        "/api/marketplace/items",
        headers=seller_headers,
        json={"name": "Magic Ring", "item_type": "avatar_item"},
    )
    item_id = item_resp.json()["id"]

    list_resp = client.post(
        "/api/marketplace/listings",
        headers=seller_headers,
        json={"catalog_item_id": item_id, "price": 100},
    )
    listing_id = list_resp.json()["id"]

    # Fund buyer
    s_resp = client.post("/api/payments/purchase", headers=buyer_headers, json={"credits": 500})
    assert s_resp.status_code == 201, s_resp.text
    client.post("/api/payments/confirm", headers=buyer_headers, json={"session_id": s_resp.json()["session_id"]})

    # Purchase
    buy_resp = client.post(f"/api/marketplace/listings/{listing_id}/purchase", headers=buyer_headers)
    assert buy_resp.status_code == 201
    purchase_id = buy_resp.json()["id"]

    # Buyer balance is 400
    w1 = client.get("/api/wallet", headers=buyer_headers).json()
    assert w1["balance"] == 400

    # Seller pending is 70
    cb1 = client.get("/api/marketplace/creator/balance", headers=seller_headers).json()
    assert cb1["pending"] == 70

    # Refund
    ref_resp = client.post(
        f"/api/marketplace/purchases/{purchase_id}/refund",
        headers=seller_headers,
        json={"reason": "Buyer dissatisfaction"},
    )
    assert ref_resp.status_code == 200, ref_resp.text
    assert ref_resp.json()["status"] == "refunded"

    # Buyer balance refunded back to 500
    w2 = client.get("/api/wallet", headers=buyer_headers).json()
    assert w2["balance"] == 500

    # Seller pending reset to 0
    cb2 = client.get("/api/marketplace/creator/balance", headers=seller_headers).json()
    assert cb2["pending"] == 0