app.py

import gradio as gr
import json
import logging
import random
from dataclasses import dataclass
from typing import Union
from do_not_delete_or_move_this import midi3 as mid3, midi2 as mid2

# Define constants
DISABLE_PROMPTS = True
SWAP_BF_EN = False

@dataclass(frozen=True)
class Preferences:
    jack_mode: int
    note_tolerance: int

def process_notes(channel_data, spb: float, prefs: Preferences):
    chart_notes = []
    prev_note = [0, 60, 100, 0.0]
    prev_pitch = prev_note[1]
    cur_arrow = random.randint(0, 3)
    for note in channel_data:
        cur_pitch = note[1]
        diff = cur_pitch - prev_pitch

        if cur_pitch < prev_pitch:
            cur_arrow = (cur_arrow - one_or_two_seed(diff)) % 4
        elif cur_pitch > prev_pitch:
            cur_arrow = (cur_arrow + one_or_two_seed(diff)) % 4
        elif random.randint(1, 3) <= prefs.jack_mode:
            cur_arrow = (cur_arrow + random.randint(-2, 2)) % 4

        sus_length = note[3] * 0.85 * 1000 if note[2] < 60 or note[3] > (spb / 2) + 0.0001 else 0
        chart_notes.append([note[0] * 1000, cur_arrow, sus_length])
        prev_pitch = cur_pitch

    return chart_notes

def one_or_two_seed(seed: int) -> int:
    seed = abs(seed)
    seed_map = {0: 0, 1: 1, 2: 1, 3: 1, 4: 1, 5: 2, 6: 2, 7: 2, 8: 3}
    chance = seed_map.get(seed, 3)
    rand = random.randint(0, 6)
    return 2 if chance >= rand else 1

def split_into_sections(notes: list, spb: float):
    section_length = spb * 4
    full_note_data = {}
    for note in notes:
        note_section = ((note[0] / 1000) + 0.0001) // section_length
        full_note_data.setdefault(note_section, []).append(note)
    highest_channel = max(int(mm) for mm in full_note_data.keys()) + 1
    isolated_section_list = [[] for _ in range(0, highest_channel)]
    for key, item in full_note_data.items():
        isolated_section_list[int(key)] = item
    return isolated_section_list

def compare_sections(en_section: list, bf_section: list, prev_musthit: bool, prefs: Preferences):
    percent_bf = (len(bf_section) / len(en_section)) * 100 if len(en_section) != 0 else (100 if len(bf_section) else 50)
    must_hit = percent_bf >= prefs.note_tolerance or (prefs.note_tolerance >= percent_bf >= (100 - prefs.note_tolerance) and not prev_musthit)
    
    unsorted_combined_sections = []
    if must_hit:
        unsorted_combined_sections.extend([[en_note[0], en_note[1] + 4, en_note[2]] for en_note in en_section])
        unsorted_combined_sections.extend([[bf_note[0], bf_note[1], bf_note[2]] for bf_note in bf_section])
    else:
        unsorted_combined_sections.extend([[en_note[0], en_note[1], en_note[2]] for en_note in en_section])
        unsorted_combined_sections.extend([[bf_note[0], bf_note[1] + 4, bf_note[2]] for bf_note in bf_section])
    
    sorted_combined_sections = sorted(unsorted_combined_sections, key=lambda x: (x[0], x[1]))
    return sorted_combined_sections, must_hit

def main(path_to: str, prefs: Preferences):
    pm = mid2.process_midi(path_to)
    spb = mid2.obtain_spb(path_to)
    bpm = round(60 / spb, 3)
    
    full_mid_data = mid3.main(pm)
    full_note_list_en = process_notes(full_mid_data[0], spb, prefs)
    full_note_list_bf = process_notes(full_mid_data[1], spb, prefs)

    sectioned_en_list = split_into_sections(full_note_list_en, spb)
    sectioned_bf_list = split_into_sections(full_note_list_bf, spb)

    sectioned_bf_list, sectioned_en_list = sectioned_en_list, sectioned_bf_list if SWAP_BF_EN else (sectioned_bf_list, sectioned_en_list)

    len_diff = abs(len(sectioned_bf_list) - len(sectioned_en_list))
    if len(sectioned_en_list) < len(sectioned_bf_list):
        sectioned_en_list.extend([[] for _ in range(0, len_diff)])
    if len(sectioned_en_list) > len(sectioned_bf_list):
        sectioned_bf_list.extend([[] for _ in range(0, len_diff)])

    musthit = True
    json_notes = []
    for en_section, bf_section in zip(sectioned_en_list, sectioned_bf_list):
        sec_notes, musthit = compare_sections(en_section, bf_section, musthit, prefs)
        json_notes.append({"sectionNotes": sec_notes, "lengthInSteps": 16, "mustHitSection": musthit})

    return json.dumps({"song": {"player1": "bf", "player2": "dad", "gfVersion": "gf",
                                "notes": json_notes, "stage": "", "needsVoices": True,
                                "validScore": True, "bpm": bpm, "speed": 2.4, "song": "tempSong"}}, indent=4)

def gradio_interface(midi_file, jack_mode, note_tolerance):
    prefs = Preferences(jack_mode=jack_mode, note_tolerance=note_tolerance)
    return main(midi_file.name, prefs)


theme = gr.themes.Soft(
    primary_hue="sky",
    secondary_hue="violet",
    neutral_hue="gray",
    font=[gr.themes.GoogleFont('orbitron')]
)


# Create Gradio interface
mainweb = gr.Interface(
    fn=gradio_interface,
    inputs=[
        gr.File(file_count="single", label="MIDI File"),
        gr.Slider(minimum=0, maximum=3, step=1, value=0, label="Jack Mode"),
        gr.Slider(minimum=0, maximum=100, step=5, value=75, label="Note Tolerance")
    ],
    outputs=gr.Textbox(label="JSON Output"),
)

with gr.Blocks() as information:
    with open("anotherday.md", "r", encoding="utf8") as f:
        info = f.read()
    gr.Markdown(value=info)
        


with gr.Blocks(theme=theme) as demo:
    gr.Markdown("# Funkin Chart Generator")
    gr.Markdown("Automatically generate an FnF chart only using MIDI files")
    gr.TabbedInterface([mainweb, information], ["main settings", "information"])

demo.launch()