import sys
import csv
import json
import os

SCRIPT_PATH = os.path.dirname(os.path.realpath(__file__))

def main():
    if len(sys.argv) != 2:
        print('provide manifest data directory')
        return
    manifest_dir = sys.argv[1]
    
    with open(manifest_dir + '/dev_type', 'r') as f:
        dev_type = f.read()
    
    with open(manifest_dir + '/dev_variant', 'r') as f:
        dev_variant = f.read()
    
    try:
        with open(SCRIPT_PATH + '/instructions.json', 'r') as f:
            instructions = json.load(f)
    except Exception as e:
        print(f'unable to read instructions file: {e}')
        instructions = []
    
    mem_segments = []
    out_manifest = {
        'mem_segments': mem_segments,
        'dev_type': dev_type,
        'dev_variant': dev_variant,
        'instructions': instructions
    }
    
    with open(manifest_dir + '/seg_data.csv', 'r', newline='') as csvfile:
        reader = csv.DictReader(csvfile, delimiter=';')    
        for line in reader:
            mem_segments.append(
                {
                    'seg_id': int(line['seg_id']),
                    'name': line['name'],
                    'word_len': int(line['word_len']),
                    'default_size': int(line['default_size']),
                    'default_addr': int(line['default_addr']),
                    'is_executable': line['is_executable'] == '1'
                }
            )
    
    with open(manifest_dir + '/MANIFEST.json', 'w') as f:
        json.dump(out_manifest, f, indent=4)
            
if __name__ == '__main__':
    main()