import subprocess
import requests
import os
import json
import threading
from utilities.render_worker import RenderStatus
from utilities.ffmpeg_presets import generate_fast_preview, save_first_frame


def post_job_to_server(input_path, job_list, client, server_port=8080):
    # Pack job data and submit to server
    job_files = {'file': (os.path.basename(input_path), open(input_path, 'rb'), 'application/octet-stream'),
                 'json': (None, json.dumps(job_list), 'application/json')}

    req = requests.post(f'http://{client}:{server_port}/api/add_job', files=job_files)
    return req


def generate_thumbnail_for_job(job, thumb_video_path, thumb_image_path, max_width=320):

    # Simple thread to generate thumbs in background
    def generate_thumb_thread(source):
        in_progress_path = thumb_video_path + '_IN-PROGRESS'
        subprocess.run(['touch', in_progress_path])
        generate_fast_preview(source_path=source, dest_path=thumb_video_path, max_width=max_width)
        os.remove(in_progress_path)

    # Determine best source file to use for thumbs
    if job.render_status() == RenderStatus.COMPLETED:  # use finished file for thumb
        source_path = job.file_list()
    elif len(job.file_list()) > 1:  # if image sequence, use second to last file (last may be in use)
        source_path = [job.file_list()[-2]]
    else:
        source_path = [job.worker.input_path]  # use source if nothing else

    # Todo: convert image sequence to animated movie
    valid_formats = ['.mp4', '.mov', '.avi', '.mpg', '.mpeg', '.jpg', '.png', '.exr', '.mxf']
    is_valid_file_type = any(ele in source_path[0] for ele in valid_formats)
    if is_valid_file_type and not os.path.exists(thumb_video_path):
        save_first_frame(source_path=source_path[0], dest_path=thumb_image_path, max_width=max_width)
        x = threading.Thread(target=generate_thumb_thread, args=(source_path[0],))
        x.start()