from pathlib import Path
import asyncio.subprocess as subprocess
import asyncio
from watchfiles import awatch
from termcolor import colored
from datetime import datetime
import orjson
import os
import tempfile
from tests_config import sql_parser_tests, sql_checker_tests


async def run_and_output(
    *args: str, timeout=10
) -> tuple[bytes, bytes]:
    p = await subprocess.create_subprocess_exec(
        *args,
        stdout=subprocess.PIPE,
        stderr=subprocess.PIPE,
    )
    stdout, stderr = await asyncio.wait_for(p.communicate(), timeout=timeout)
    return stdout, stderr

async def rebuild() -> bool:
    stdout, _ = await run_and_output('xmake')
    if b"error" in stdout:
        print(stdout.decode("utf-8"))
        print(datetime.now(), "-" * 40)
        return False
    else:
        return True

async def assert_sql(sql: str, expected: dict):
    stdout, stderr = await run_and_output('xmake', 'run', "sql-parser", sql)

    if b"error" in stdout:
        print(stdout.decode("utf-8"))
        print(datetime.now(), "-" * 40)
        print(f'other: {colored(stderr.decode("utf-8"), "yellow")}')
        assert False, "sql-parser error"

    try:
        output = orjson.loads(stdout)
    except Exception as e:
        output = {"error": e, "output": stdout.decode("utf-8")}
    open("/tmp/temp/test.py", "wb").write(
        f'"{sql}"\n\n'.encode("utf-8")
        + orjson.dumps(output, option=orjson.OPT_INDENT_2)
        + (b"\n\n" + stderr).replace(b"\n", b"\n# ")
    )
    assert (
        output == expected
    ), f"""{colored("sql-parser error", "red")}
input: {colored(sql, "yellow")}
expect: {colored(expected, "green")}
actual: {colored(output, "red")}
other: {colored(stderr.decode("utf-8"), "yellow")}

"""


async def assert_sqls():
    for sql, excepted in sql_parser_tests:
        await assert_sql(sql, excepted)


async def on_parser_modified():
    print(datetime.now(), colored("run parser tests...", "yellow"))

    try:
        await assert_sqls()
    except Exception as e:
        print(e)
    else:
        print(datetime.now(), colored("all parser tests right!", "green"))


async def assert_check():
    for sql, res in sql_checker_tests:
        stdout, stderr = await run_and_output(
            'xmake', 'run', "sql-checker", 
            "-s", sql
        )
        if res is True:
            assert b'error' not in stdout, stdout.decode("utf-8")
            assert b'error' not in stderr, stderr.decode('utf-8')
        elif isinstance(res, str):
            res = res.encode('utf-8') 
            assert res in stdout or res in stderr, stdout.decode("utf-8")
        else:
            assert False, f"{res} 不是合适的结果"

async def on_checker_modified():
    print(datetime.now(), colored("run checker tests...", "yellow"))
    try:
        await assert_check()
    except Exception as e:
        print(e)
    print(datetime.now(), colored("all checker tests right!", "green"))


async def restart():
    async for _ in awatch(__file__):
        print("restart")
        os.execl("/bin/python", Path(__file__).as_posix(), Path(__file__).as_posix())


async def watch_parser():
    async for changes in awatch("./src/parser.y", "./src/parser.l"):
        if await rebuild():
            await asyncio.wait_for(on_parser_modified(), 10)


async def watch_checker():
    async for changes in awatch("./src/checker.cpp", "./src/checker.h", "./src/utils.h", "./src/utils.cpp"):
        if await rebuild():
            await on_checker_modified()


async def main():
    await asyncio.gather(
        restart(),
        watch_parser(),
        watch_checker(),
        on_parser_modified(),
        on_checker_modified(),
    )


if __name__ == "__main__":
    asyncio.run(main())