# Migrates files written in vue1 to vue2.
# Based on recommandation of vue-migration helper.
#
# Only applies the 'easy' recommandations:
# - suggested updates with the correct value
# - argument order
# - replace ready
# - some custom filters with arguments (moment, padLeft, ...)
#
# How to :
# - update `folder_to_migrate_path` and `migration_results_path`
# - run vue-migration-helper tool
# - run this script

import fileinput
import re


def import_and_clean(file_path):
    lines = [line.rstrip('\n').strip(' ') for line in open(file_path)]
    # clean empty lines
    lines = [line for line in lines if line]
    # clean more info lines
    lines = [line for line in lines if not line.startswith('More info') and not line.startswith('Reason')]

    return lines


def merge_lines(lines):
    # merge action and file location lines
    return [action + '@' + file_location for action, file_location in zip(lines[0::2], lines[1::2])]


def get_file_and_line(line):
    file_name = re.search(r'[0-9]:\s(.*)$', line).group(1)
    line_number = int(re.search(r'\@Line\s([0-9]*)', line).group(1))
    return file_name, line_number


def process_update_to_migrations(migration, line):
    original_code = re.search(r'Update\s(.*)\sto\s', migration)
    updated_code = re.search(r'^[0-9]*.*\sto\s(.*)\@', migration)
    if original_code:
        line = line.replace(original_code.group(1), updated_code.group(1))
    return line


def process_switch_argument_orger(migration, line):
    original_code = re.search(r'Switch argument order.*\"(\(.*\)).*\"', migration)
    updated_code = re.search(r'^[0-9]*.*\sto\s(.*)\@', migration)
    if original_code:
        line = line.replace(original_code.group(1), updated_code.group(1))
    return line


def process_replace_ready_with_mounted(migration, line):
    if re.match(r'^[0-9]*.*\sReplace ready with', migration):
        line = line.replace('ready', 'mounted')
    return line


def process_replace_moment_format_filter(migration, line):
    original_code = re.search(r'Replace\smomentFormat(\s\'.*\')\s', migration)
    updated_code = re.search(r'Replace\smomentFormat\s.*momentFormat(\(.*\))', migration)
    if original_code:
        line = line.replace(original_code.group(1), updated_code.group(1))
    return line


def process_replace_padleft(migration, line):
    original_code = re.search(r'Replace\spadLeft\s([0-9]*)', migration)
    updated_code = re.search(r'Replace\spadLeft\s.*padLeft(\(.*\))', migration)
    if original_code:
        line = line.replace(original_code.group(1), updated_code.group(1))
    return line


def process_replace_prefix(migration, line):
    original_code = re.search(r'Replace\sprefix\s(\'.*\')\s', migration)
    updated_code = re.search(r'Replace\sprefix\s.*prefix(\(.*\))', migration)
    if original_code:
        line = line.replace(original_code.group(1), updated_code.group(1))
    return line


def migrate_to_vue2():
    # The folder from where the vue-migration-helper tool was launched
    folder_to_migrate_path = '/Users/etienne/projects/admin-app/assets/main/js/vue/'
    # The file containing the results of the vue-migration-helper tool
    migration_results_path = '/Users/etienne/PycharmProjects/vue-migration-automation/migration-results'

    migrations = import_and_clean(migration_results_path)
    migrations = merge_lines(migrations)

    for migration in migrations:

        file_name, line_number = get_file_and_line(migration)
        full_file_path = folder_to_migrate_path + file_name

        file = open(full_file_path, "r")
        code_lines = file.readlines()
        file.close()

        for i, line in enumerate(code_lines):
            if i + 1 == line_number:
                line = process_update_to_migrations(migration, line)
                line = process_switch_argument_orger(migration, line)
                line = process_replace_ready_with_mounted(migration, line)
                line = process_replace_moment_format_filter(migration, line)
                line = process_replace_padleft(migration, line)
                line = process_replace_prefix(migration, line)

                code_lines[i] = line
        f = open(full_file_path, "w")
        f.write("".join(code_lines))
        f.close()


migrate_to_vue2()