from datasette.cli import cli
from click.testing import CliRunner
import urllib
import sqlite3
from .fixtures import app_client_two_attached_databases_crossdb_enabled


def test_crossdb_join(app_client_two_attached_databases_crossdb_enabled):
    app_client = app_client_two_attached_databases_crossdb_enabled
    sql = """
    select
      'extra database' as db,
      pk,
      text1,
      text2
    from
      [extra database].searchable
    union all
    select
      'fixtures' as db,
      pk,
      text1,
      text2
    from
      fixtures.searchable
    """
    response = app_client.get(
        "/_memory.json?" + urllib.parse.urlencode({"sql": sql, "_shape": "array"})
    )
    assert response.status == 200
    assert response.json == [
        {"db": "extra database", "pk": 1, "text1": "barry cat", "text2": "terry dog"},
        {"db": "extra database", "pk": 2, "text1": "terry dog", "text2": "sara weasel"},
        {"db": "fixtures", "pk": 1, "text1": "barry cat", "text2": "terry dog"},
        {"db": "fixtures", "pk": 2, "text1": "terry dog", "text2": "sara weasel"},
    ]


def test_crossdb_warning_if_too_many_databases(tmp_path_factory):
    db_dir = tmp_path_factory.mktemp("dbs")
    dbs = []
    for i in range(11):
        path = str(db_dir / "db_{}.db".format(i))
        conn = sqlite3.connect(path)
        conn.execute("vacuum")
        dbs.append(path)
    runner = CliRunner(mix_stderr=False)
    result = runner.invoke(
        cli,
        [
            "serve",
            "--crossdb",
            "--get",
            "/",
        ]
        + dbs,
        catch_exceptions=False,
    )
    assert (
        "Warning: --crossdb only works with the first 10 attached databases"
        in result.stderr
    )


def test_crossdb_attached_database_list_display(
    app_client_two_attached_databases_crossdb_enabled,
):
    app_client = app_client_two_attached_databases_crossdb_enabled
    response = app_client.get("/_memory")
    for fragment in (
        "databases are attached to this connection",
        "<li><strong>fixtures</strong> - ",
        "<li><strong>extra database</strong> - ",
    ):
        assert fragment in response.text