"""§22.2 registry parse + apply: validation, type-immutability, upsert."""
from __future__ import annotations

import tempfile
from pathlib import Path

import pytest

from app import db, registry
from app.config import Config


def _db():
    cfg = Config(
        gitea_url="x", gitea_bot_user="x", gitea_bot_token="x", gitea_org="x",
        registry_repo="registry", oauth_client_id="x",
        oauth_client_secret="x", app_url="x", secret_key="x",
        database_path=Path(tempfile.mkdtemp(prefix="reg-")) / "t.db",
        owner_gitea_login="x", webhook_secret="x",
    )
    db.run_migrations(cfg)
    if db._CONN is not None:
        db._CONN.close()
        db._CONN = None
    db.init(cfg)
    return cfg


VALID = """
deployment:
  name: Open Human Model
  tagline: A model of human flourishing
projects:
  - id: default
    name: Open Human Model
    type: document
    content_repo: meta
    visibility: public
"""


def test_parse_valid_registry():
    doc = registry.parse_registry(VALID)
    assert doc.deployment_name == "Open Human Model"
    assert doc.deployment_tagline == "A model of human flourishing"
    assert len(doc.projects) == 1
    p = doc.projects[0]
    assert (p.id, p.type, p.content_repo, p.visibility) == ("default", "document", "meta", "public")
    assert p.initial_state == "super-draft"


def test_parse_initial_state_defaults_per_type():
    doc = registry.parse_registry(
        "projects:\n  - {id: a, name: A, type: bdd, content_repo: a}\n"
    )
    assert doc.projects[0].initial_state == "active"  # bdd default


@pytest.mark.parametrize("bad,msg", [
    ("projects: []\n", "at least one"),
    ("projects:\n  - just-a-string\n", "must be a mapping"),
    ("projects:\n  - {id: 'Bad Slug', name: A, type: document, content_repo: a}\n", "valid slug"),
    ("projects:\n  - {id: a, name: A, type: nope, content_repo: a}\n", "invalid type"),
    ("projects:\n  - {id: a, name: A, type: document}\n", "content_repo"),
    ("projects:\n  - {id: a, name: A, type: document, content_repo: a, visibility: x}\n", "visibility"),
    ("projects:\n  - {id: a, name: A, type: document, content_repo: a}\n  - {id: a, name: B, type: document, content_repo: b}\n", "duplicate"),
])
def test_parse_rejects_invalid(bad, msg):
    with pytest.raises(registry.RegistryError) as e:
        registry.parse_registry(bad)
    assert msg in str(e.value)


def test_apply_upserts_projects_and_deployment():
    _db()
    doc = registry.parse_registry(VALID)
    registry.apply_registry(doc, registry_sha="regsha1", default_id="default")
    # §22 three-tier: the project carries the grouping-tier fields; the
    # per-corpus type/initial_state live on its default collection.
    prow = db.conn().execute(
        "SELECT name, content_repo, visibility, registry_sha FROM projects WHERE id='default'"
    ).fetchone()
    assert prow["name"] == "Open Human Model"
    assert prow["content_repo"] == "meta"
    assert prow["registry_sha"] == "regsha1"
    crow = db.conn().execute(
        "SELECT type, initial_state FROM collections WHERE id='default'"
    ).fetchone()
    assert crow["type"] == "document"
    assert crow["initial_state"] == "super-draft"
    drow = db.conn().execute("SELECT name, tagline FROM deployment WHERE id=1").fetchone()
    assert drow["name"] == "Open Human Model"
    assert drow["tagline"] == "A model of human flourishing"


def test_apply_rejects_type_change_on_existing_project():
    _db()
    registry.apply_registry(registry.parse_registry(VALID), "s1", default_id="default")
    changed = VALID.replace("type: document", "type: specification")
    registry.apply_registry(registry.parse_registry(changed), "s2", default_id="default")  # skipped
    # §22.4a immutable type — now enforced on the collection.
    t = db.conn().execute("SELECT type FROM collections WHERE id='default'").fetchone()["type"]
    assert t == "document"  # immutable — unchanged
    # The deployment row IS still advanced even though the type change was skipped.
    drow = db.conn().execute("SELECT registry_sha FROM deployment WHERE id=1").fetchone()
    assert drow["registry_sha"] == "s2"