import os
import glob
import argparse


### Script to track decompilation progress.
### Example usage: python3 scripts/decomp_progress.py ~/jak-project/goal_src/jak2

def get_goal_files(root_dir, ext = "*.gc"):
    """Get all GOAL source files under root_dir."""
    return [goal_file for file in os.walk(root_dir) for goal_file in glob.glob(os.path.join(file[0], ext))]


def lines_in_file(file_path):
    with open(file_path) as f:
        lines = 0
        for _ in f:
            lines += 1
        return lines


def print_table(stats, total_gc_files):
    total_lines = 0
    print("| {: <24} | {: <6} |".format("file name", "lines"))
    print("-------------------------------------")
    for x in stats:
        print("  {: <24} | {: >6} |".format(x[0], x[1]))
        total_lines += x[1]
    print("-------------------------------------")
    print("| {: <24} | {: >6} |".format("TOTAL", total_lines))
    print("-------------------------------------")
    estimated_lines = 1000000
    print("Progress: {}/{} lines ({:.2f}%)".format(total_lines, estimated_lines, 100. * total_lines / estimated_lines))
    print("{}/{} files modified from template ({:.2f}%)".format(len(stats), total_gc_files,
                                                                100. * len(stats) / total_gc_files))


def main():
    parser = argparse.ArgumentParser()
    parser.add_argument(dest='goal_src', help='the goal_src folder')
    args = parser.parse_args()
    all_files = get_goal_files(args.goal_src)

    ref_files = get_goal_files(args.goal_src + "/../../test/decompiler/reference/jak2", "*_REF.gc")
    ref_files_no_ext = [os.path.basename(fn)[:-7] for fn in ref_files]



    file_stats = []
    total_gc_files = 0
    excluded_files = {"game_dgos.gc", "all_files.gc", "goal-lib.gc", "ocean-trans-tables.gc", "ocean-frames.gc",
                      "ocean-tables.gc"}
    modified = set()

    for fn in all_files:
        short_name = os.path.basename(fn)
        line_count = lines_in_file(fn)

        if short_name in excluded_files:
            continue

        total_gc_files += 1

        if line_count < 10 or short_name in excluded_files:
            # the template has 7 lines, just skip it.
            continue

        file_stats.append((short_name, line_count))
        modified.add(short_name[:-3])

    file_stats.sort(key=lambda x: x[1])


    missing_ref_files = modified - set(ref_files_no_ext)

    print("Missing ref files:")
    for fn in missing_ref_files:
        print(" {}".format(fn))


    print_table(file_stats, total_gc_files)


if __name__ == "__main__":
    main()