#!/usr/bin/env python3
# test hurl file
#
import codecs
import sys
import subprocess
import os
import platform
import check_json_output
import tempfile


def decode_string(encoded):
    if encoded.startswith(codecs.BOM_UTF8):
        return encoded.decode('utf-8-sig')
    elif encoded.startswith(codecs.BOM_UTF16):
        encoded = encoded[len(codecs.BOM_UTF16):]
        return encoded.decode('utf-16')
    else:
        return encoded.decode()


# return linux, osx or windows
def get_os():
    if platform.system() == 'Linux':
        return 'linux'
    elif platform.system() == 'Darwin':
        return 'osx'
    elif platform.system() == 'Windows':
        return 'windows'
    else:
        raise Error('Invalid Platform ' + platform.system())


def test(hurl_file):
  
    options_file = hurl_file.replace('.hurl','.options')
    curl_file = hurl_file.replace('.hurl','.curl')
    json_output_file = hurl_file.replace('.hurl','.output.json')
    profile_file = hurl_file.replace('.hurl','.profile')

    options = []
    if os.path.exists(options_file):
         options = open(options_file).read().strip().split(' ')
    if os.path.exists(curl_file):
        options.append('--verbose')

    if os.path.exists(json_output_file):
        options.append('--json')

    env = os.environ.copy()
    if os.path.exists(profile_file):
        for line in open(profile_file).readlines():
            line = line.strip()
            if line == '':
                continue
            index = line.index('=')
            name = line[:index]
            value = line[(index+1):]
            env[name] = value

    cmd = ['hurl', hurl_file] + options
    print(' '.join(cmd))
    result = subprocess.run(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE,env=env)

    # exit code 
    f = hurl_file.replace('.hurl','.exit')
    expected = int(open(f).read().strip())
    if result.returncode != expected:
        print('>>> error in return code')
        print(f'expected: {expected}  actual:{result.returncode}')
        stderr = decode_string(result.stderr).strip()
        if stderr != '':
            print(stderr)
        sys.exit(1)

    # stdout
    f = hurl_file.replace('.hurl','.out')
    if os.path.exists(f):
         expected = open(f, 'rb').read()
         actual = result.stdout
         if expected != actual:
             print('>>> error in stdout')
             print(f'actual: <{actual}>\nexpected: <{expected}>')
             sys.exit(1)

    # stdout (json)
    if os.path.exists(json_output_file):
        expected = open(json_output_file).read()
        actual = result.stdout
        check_json_output.check(expected, actual)

    # stderr
    f = hurl_file.replace('.hurl', '.' + get_os() + '.err')
    if os.path.exists(f):
        expected = open(f).read().strip()
        actual = decode_string(result.stderr).strip()
        if expected != actual:
            print('>>> error in stderr')
            print(f'actual: <{actual}>\nexpected: <{expected}>')
            sys.exit(1)
    else:
        f = hurl_file.replace('.hurl', '.err')
        if os.path.exists(f):
            expected = open(f).read().strip()
            actual = decode_string(result.stderr).strip()
            if expected != actual:
                print('>>> error in stderr')
                print(f'actual: <{actual}>\nexpected: <{expected}>')
                sys.exit(1)

    # curl output
    if os.path.exists(curl_file):
        expected_commands = []
        for line in open(curl_file, 'r').readlines():
             line = line.strip()
             if line == "" or line.startswith("#"):
                 continue
             expected_commands.append(line)

        actual = decode_string(result.stderr).strip()
        actual_commands= [line[2:] for line in actual.split('\n') if line.startswith('* curl')]

        if len(actual_commands) != len(expected_commands):
             print('Assert error at %s' % (f))
             print('expected: %d commands' % len(expected_commands))
             print('actual:   %d commands' % len(actual_commands))
             sys.exit(1)

        for i in range(len(expected_commands)):
            if actual_commands[i] != expected_commands[i]:
                print('Assert error at %s:%i' % (curl_file, i+1))
                print('expected: %s' % expected_commands[i])
                print('actual:   %s' % actual_commands[i])
                sys.exit(1)


def main():
    for hurl_file in sys.argv[1:]:
        test(hurl_file)


if __name__ == '__main__':
    main()