# -*- coding:utf-8 -*-
"""
datax-sync-template-gen 模板渲染 + JDBC URL 解析单测。

不连真 PG（query_columns_full 走 mock conn）。
脚本路径含连字符，用 importlib.util 动态加载为模块。
"""
import importlib.util
import os
import sys
from unittest.mock import MagicMock

import pytest

PROJECT_ROOT = os.path.dirname(os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__)))))
SCRIPT_PATH = os.path.join(PROJECT_ROOT, 'bin', 'datax-sync-template-gen.py')


def _load_script():
    spec = importlib.util.spec_from_file_location('datax_sync_template_gen', SCRIPT_PATH)
    mod = importlib.util.module_from_spec(spec)
    sys.modules['datax_sync_template_gen'] = mod
    spec.loader.exec_module(mod)
    return mod


GEN = _load_script()


def test_parse_jdbc_url_with_port():
    host, port, db = GEN.parse_jdbc_url('jdbc:postgresql://10.0.0.1:5433/hobby_stocks')
    assert host == '10.0.0.1'
    assert port == 5433
    assert db == 'hobby_stocks'


def test_parse_jdbc_url_default_port():
    host, port, db = GEN.parse_jdbc_url('jdbc:postgresql://pg.example.com/mydb')
    assert host == 'pg.example.com'
    assert port == 5432
    assert db == 'mydb'


def test_parse_jdbc_url_invalid():
    with pytest.raises(ValueError, match='无法解析'):
        GEN.parse_jdbc_url('mysql://10.0.0.1:3306/foo')


def test_render_template_includes_required_fields():
    columns = [('id', 'id'), ('name', '姓名'), ('create_time', '创建时间')]
    out = GEN.render_template(
        ds_ref='postgresql/prod-hobby',
        database='hobby_stocks',
        schema='public',
        table='users',
        columns=columns,
        pk='id',
    )
    assert 'dataSource = postgresql/prod-hobby' in out
    assert 'database = hobby_stocks' in out
    assert 'table = public.users' in out
    assert 'column = id,name,create_time' in out
    assert 'splitPk = id' in out
    assert "where = update_time >= '${start_date}' AND update_time < '${stop_date}'" in out
    assert 'path = /user/hive/warehouse/raw.db/users_TODO_d/dt=${dt}/' in out
    assert 'fileName = users_TODO_d' in out


def test_query_columns_full_returns_full_metadata():
    conn = MagicMock()
    cur = conn.cursor.return_value
    cur.fetchall.return_value = [
        (1, 'id', 'id', 'bigint', 'PK'),
        (2, 'name', '名称', 'character varying', ''),
    ]
    rows = GEN.query_columns_full(conn, 'public', 'orders')
    assert rows == [
        (1, 'id', 'id', 'bigint', 'PK'),
        (2, 'name', '名称', 'character varying', ''),
    ]


def test_render_schema_md_table_format():
    rows = [
        (1, 'id', 'id', 'bigint', 'PK'),
        (2, 'user_name', '用户名', 'character varying', ''),
        (3, 'create_time', None, 'timestamp without time zone', ''),  # 无注释
    ]
    out = GEN.render_schema_md(rows)
    assert '| 序号 | 字段名 | 中文名 | 数据类型 | 主键标识 | 裁剪类型 |' in out
    assert '| 1 | `id` | id | bigint | PK |  |' in out
    assert '| 2 | `user_name` | 用户名 | character varying |  |  |' in out
    assert '| 3 | `create_time` |  | timestamp without time zone |  |  |' in out


def test_render_template_empty_pk():
    out = GEN.render_template(
        ds_ref='postgresql/prod-hobby', database='db', schema='public',
        table='t', columns=[('a', '')], pk='',
    )
    assert 'splitPk = \n' in out