"""Tests for notes, references, and musicians sub-resource endpoints."""
from tests.conftest import AUTH


def make_tune(client):
    r = client.post("/tunes/", json={"name": "Sub Test Tune", "key": "G"}, headers=AUTH)
    assert r.status_code == 201
    return r.get_json()


def make_musician(client, name="Doc Watson"):
    r = client.post("/musicians/", json={"name": name}, headers=AUTH)
    assert r.status_code == 201
    return r.get_json()


# ── Notes ──────────────────────────────────────────────────────

class TestNotes:
    def test_add_note(self, client):
        tune = make_tune(client)
        r = client.post(f'/tunes/{tune["id"]}/notes',
                        json={"note": "remember the B part"}, headers=AUTH)
        assert r.status_code == 201
        assert r.get_json()["note"] == "remember the B part"

    def test_list_notes(self, client):
        tune = make_tune(client)
        client.post(f'/tunes/{tune["id"]}/notes', json={"note": "note 1"}, headers=AUTH)
        client.post(f'/tunes/{tune["id"]}/notes', json={"note": "note 2"}, headers=AUTH)
        r = client.get(f'/tunes/{tune["id"]}/notes', headers=AUTH)
        assert len(r.get_json()) == 2

    def test_update_note(self, client):
        tune = make_tune(client)
        note = client.post(f'/tunes/{tune["id"]}/notes',
                           json={"note": "old"}, headers=AUTH).get_json()
        r = client.patch(f'/tunes/{tune["id"]}/notes/{note["id"]}',
                         json={"note": "new"}, headers=AUTH)
        assert r.get_json()["note"] == "new"

    def test_delete_note(self, client):
        tune = make_tune(client)
        note = client.post(f'/tunes/{tune["id"]}/notes',
                           json={"note": "to delete"}, headers=AUTH).get_json()
        r = client.delete(f'/tunes/{tune["id"]}/notes/{note["id"]}', headers=AUTH)
        assert r.status_code == 200

    def test_note_on_missing_tune_returns_404(self, client):
        r = client.post("/tunes/99999/notes", json={"note": "x"}, headers=AUTH)
        assert r.status_code == 404


# ── References ────────────────────────────────────────────────

class TestReferences:
    def test_add_reference(self, client):
        tune = make_tune(client)
        r = client.post(f'/tunes/{tune["id"]}/references',
                        json={"link": "https://youtube.com/abc", "site": "YouTube"},
                        headers=AUTH)
        assert r.status_code == 201
        assert r.get_json()["musicians"] == []

    def test_add_reference_with_musicians(self, client):
        tune = make_tune(client)
        m1 = make_musician(client, "Doc Watson")
        m2 = make_musician(client, "Merle Watson")
        r = client.post(f'/tunes/{tune["id"]}/references',
                        json={"link": "https://example.com", "site": "YouTube",
                              "musicians": [{"id": m1["id"]}, {"id": m2["id"]}]},
                        headers=AUTH)
        assert r.status_code == 201
        names = [m["name"] for m in r.get_json()["musicians"]]
        assert "Doc Watson" in names
        assert "Merle Watson" in names

    def test_list_references(self, client):
        tune = make_tune(client)
        client.post(f'/tunes/{tune["id"]}/references',
                    json={"link": "https://a.com"}, headers=AUTH)
        client.post(f'/tunes/{tune["id"]}/references',
                    json={"link": "https://b.com"}, headers=AUTH)
        r = client.get(f'/tunes/{tune["id"]}/references', headers=AUTH)
        assert len(r.get_json()) == 2

    def test_update_reference(self, client):
        tune = make_tune(client)
        ref = client.post(f'/tunes/{tune["id"]}/references',
                          json={"link": "https://old.com", "site": "Old"},
                          headers=AUTH).get_json()
        r = client.patch(f'/tunes/{tune["id"]}/references/{ref["id"]}',
                         json={"site": "New"}, headers=AUTH)
        assert r.get_json()["site"] == "New"

    def test_delete_reference(self, client):
        tune = make_tune(client)
        ref = client.post(f'/tunes/{tune["id"]}/references',
                          json={"link": "https://del.com"}, headers=AUTH).get_json()
        r = client.delete(f'/tunes/{tune["id"]}/references/{ref["id"]}', headers=AUTH)
        assert r.status_code == 200


# ── Musicians on references ───────────────────────────────────

class TestReferenceMusicians:
    def _make_ref(self, client, tune_id):
        r = client.post(f'/tunes/{tune_id}/references',
                        json={"link": "https://example.com"}, headers=AUTH)
        return r.get_json()

    def test_add_musician_to_reference(self, client):
        tune = make_tune(client)
        ref  = self._make_ref(client, tune["id"])
        m    = make_musician(client, "Tony Rice")
        r = client.post(f'/tunes/{tune["id"]}/references/{ref["id"]}/musicians',
                        json={"musician_id": m["id"]}, headers=AUTH)
        assert r.status_code == 200
        names = [x["name"] for x in r.get_json()["musicians"]]
        assert "Tony Rice" in names

    def test_remove_musician_from_reference(self, client):
        tune = make_tune(client)
        m    = make_musician(client, "Tony Rice")
        ref  = self._make_ref(client, tune["id"])
        # add musician via the join endpoint
        client.post(f'/tunes/{tune["id"]}/references/{ref["id"]}/musicians',
                    json={"musician_id": m["id"]}, headers=AUTH)
        r = client.delete(
            f'/tunes/{tune["id"]}/references/{ref["id"]}/musicians/{m["id"]}',
            headers=AUTH)
        assert r.status_code == 200
        assert r.get_json()["musicians"] == []