import pytest
from django.urls import reverse

from coulomb_social.apps.identity.services import establish_session
from coulomb_social.apps.identity.user_engine import IdentityClaims
from coulomb_social.apps.members.models import Member, User


@pytest.mark.django_db
def test_healthz(client):
    r = client.get("/healthz")
    assert r.status_code == 200
    assert r.json()["status"] == "ok"


@pytest.mark.django_db
def test_landing_public(client):
    r = client.get(reverse("core:landing"))
    assert r.status_code == 200
    assert b"Sign in" in r.content


@pytest.mark.django_db
def test_registration_link_uses_only_configured_destination(client, settings):
    settings.NETKINGDOM_REGISTRATION_URL = (
        "https://users.coulomb.social/register?client_id=coulomb-social"
    )
    r = client.get(reverse("identity:register") + "?next=https://evil.example")
    assert r.status_code == 302
    assert r["Location"] == settings.NETKINGDOM_REGISTRATION_URL


@pytest.mark.django_db
def test_app_home_requires_login(client):
    r = client.get(reverse("core:app_home"))
    assert r.status_code == 302
    assert reverse("identity:login") in r["Location"]


@pytest.mark.django_db
def test_dev_login_lands_on_app_home_not_principal_dump(client, settings):
    settings.DEBUG = True
    settings.OIDC_ENABLED = False

    r = client.post(
        reverse("identity:dev_login"),
        {
            "subject": "sub-abc",
            "issuer": "https://local.dev/issuer",
            "name": "Ada Lovelace",
            "email": "ada@example.com",
            "preferred_username": "ada",
        },
    )
    assert r.status_code == 302
    assert reverse("core:app_home") in r["Location"]

    member = Member.objects.get(subject="sub-abc")
    assert member.tenant_id == settings.DEFAULT_TENANT_ID
    assert member.display_name == "Ada Lovelace"
    assert member.user_engine_user_id
    assert member.user.has_usable_password() is False

    home = client.get(reverse("core:app_home"))
    assert home.status_code == 200
    assert b"Spaces" in home.content
    assert b"No spaces yet" in home.content
    # Principal dump moved off the home body
    assert b"user-engine id" not in home.content
    assert b"sub-abc" not in home.content
    # Profile chrome shows display name
    assert b"Ada Lovelace" in home.content
    assert b"Session details" in home.content


@pytest.mark.django_db
def test_account_session_shows_principal_diagnostics(client, settings):
    settings.DEBUG = True
    settings.OIDC_ENABLED = False
    client.post(
        reverse("identity:dev_login"),
        {
            "subject": "sub-diag",
            "issuer": "https://local.dev/issuer",
            "name": "Diag User",
            "email": "diag@example.com",
        },
    )
    r = client.get(reverse("core:account_session"))
    assert r.status_code == 200
    assert b"Session details" in r.content
    assert b"sub-diag" in r.content
    assert b"Diag User" in r.content
    assert b"user-engine id" in r.content
    assert b"Tenant" in r.content
    assert b"Roles" in r.content
    assert b"Groups" in r.content


@pytest.mark.django_db
def test_account_session_requires_login(client):
    r = client.get(reverse("core:account_session"))
    assert r.status_code == 302
    assert reverse("identity:login") in r["Location"]


@pytest.mark.django_db
def test_establish_session_idempotent(client, settings):
    claims = IdentityClaims(
        issuer="https://id.example",
        subject="same-sub",
        email="x@example.com",
        name="Once",
    )
    settings.DEBUG = True
    settings.OIDC_ENABLED = False
    client.post(
        reverse("identity:dev_login"),
        {"subject": "same-sub", "issuer": "https://id.example", "name": "Once"},
    )
    client.post(
        reverse("identity:dev_login"),
        {"subject": "same-sub", "issuer": "https://id.example", "name": "Once"},
    )
    assert Member.objects.filter(subject="same-sub").count() == 1
    assert User.objects.count() == 1


@pytest.mark.django_db
def test_no_password_columns_on_member():
    field_names = {f.name for f in Member._meta.fields}
    assert "password" not in field_names