import random

class Crystal():
    def __init__(self):
        pass

    def GetFragments(self, num_results=5):
        fragments = ""

        with open('data.crystal', 'r') as file:
            lines = file.readlines()
        selected_lines = random.sample(lines, min(num_results, len(lines)))
        fragments = ''.join(selected_lines)

        return fragments
    
    def SaveNewFragment(self, fragment):
        with open('data.crystal', 'a') as file:
            file.write(fragment + '\n')
        
    

if __name__ == "__main__":
    crystal = Crystal()
    fragments = crystal.GetFragments(num_results=3)
    print(fragments)