#!/usr/bin/env python3

__help__ = """Print stats of overall project progress

# Usage: find src/ -name "*.c" | xargs ./tools/progress.py
"""

import argparse
import sys


def main():
    parser = argparse.ArgumentParser(description=__help__, allow_abbrev=False)
    parser.add_argument("files", metavar="FILE", nargs="+", help="sources")
    parser.add_argument("--sort", dest="sortkey", choices=["name", "percent", "completed", "total", "missing_contribution"], default="missing_contribution", help="key to sort on")
    parser.add_argument("-r", "--reverse", action="store_true", help="sort reverse")
    args = parser.parse_args()

    files = []

    total_funcs = 0
    stubbed_funcs = 0
    unimplemented_funcs = 0

    for file_name in args.files:
        
        # we don't care about harness code
        if 'harness' in file_name:
            continue
            
        f = open(file_name, 'r')

        in_function = False

        file_total = 0
        file_stubbed = 0
        file_unimplemented = 0

        while True:
            line = f.readline()
            if line == '':
                break

            if line[0].isalpha() and '(' in line and line[-2] == '{':
                in_function = True
                file_total = file_total + 1
            if line[0] == '}' and in_function == True:
                # leaving function
                in_function = False

            if in_function:
                if line.strip() == 'NOT_IMPLEMENTED();':
                    file_unimplemented = file_unimplemented + 1
                elif line.strip() == 'STUB();':
                    file_stubbed = file_stubbed + 1
                elif line.strip() == 'STUB_ONCE();':
                    file_stubbed = file_stubbed + 1

        
        if file_total > 0:    
            completed = file_total - (file_stubbed + file_unimplemented)
            file = {
                'name': file_name,
                'percent': round((completed / file_total) * 100),
                'completed': completed,
                'total': file_total,
            }
            files.append(file)

    total_nb_functions = sum(f['total'] for f in files)
    total_implemented_functions = sum(f['completed'] for f in files)
    total_missing_functions = total_nb_functions - total_implemented_functions
    for f in files:
        f['missing_contribution'] = 100 * (f['total'] - f['completed']) / total_missing_functions

    print('{0:45} {1:>7} {2:>9} / {3:>5} {4:>7}'.format('name', 'percent', 'completed', 'total', 'missing'))
    print("=======================================")

    completed_funcs = 0
    total_funcs = 0
    for f in sorted(files, key=lambda x: x[args.sortkey], reverse=not args.reverse):
        print('{0:45} {1:>6}% {2:>9} / {3:>5} {4:>6.2f}%'.format(f['name'], f['percent'], f['completed'], f['total'], f['missing_contribution']))

        total_funcs = total_funcs + f['total']
        completed_funcs = completed_funcs + f['completed']


    print('{0:45} {1:>7} {2:>9} / {3:>5} {4:>7}'.format('name', 'percent', 'completed', 'total', 'missing'))
    print("=======================================")
    percent_completed = round((completed_funcs / total_funcs) * 100)
    print('{0:45} {1:5}% {2:>9} / {3:>4}'.format('total', percent_completed, completed_funcs, total_funcs))

    print()
    print('Overall progress:')
    print('{0}% of all functions implemented. ({1} completed / {2} total)'.format(percent_completed, completed_funcs, total_funcs))

    return 0

if __name__ == "__main__":
    raise SystemExit(main())