#!/run/current-system/sw/bin/python
import os
import json
import datetime
import copy
import dataclasses

input_file_path = './program.json'

title_max_length = 30
#current_date = datetime.datetime(year=2024, month=7, day=18, hour=14, minute=59)  # DEBUG 

@dataclasses.dataclass
class Event:
    title:      str = None
    room:       str = None
    day:        str = None
    start_date: datetime.datetime = None
    end_date:   datetime.datetime = None
    icon:       str = '?'
    time:       str = None
    duration:   datetime.timedelta = None
    pretty:     str = None
    progress:   int = None

icons = {
        'Startent at Info Desk' :         "⭐",
        'Speakers Tent':                  "🏕",
        'Workshop Room':                  "🛠️",
        'Bar Meetup Area':                "🍺",
        'Bar Area':                       "🍺",
        'External':                       "🚗",
        'Pyjam.as Village in Party Area': "🐍"
}


def get_program() -> list[Event]:
    program: list[Event] = []
    # Parse program into data format (interpret datetime, and such)
    with open(input_file_path, "r") as json_file:
        program_raw = json.load(json_file)
        for event_raw in program_raw:
            event = Event()
            #print(event_raw["title"])
            for d in ["title", "room"]: # 1 to 1 mapping
                setattr(event, d, event_raw[d])
            event.start_date = datetime.datetime.strptime(event_raw["date"], "%Y-%m-%dT%H:%M:%S+00:00")
            event.start_date += datetime.timedelta(hours=2)  # Hvad er vinter tid?
            end_bogus = datetime.datetime.strptime(event_raw["duration"],"%H:%M:%S")
            event.duration = datetime.timedelta(hours=end_bogus.hour, minutes=end_bogus.minute, seconds=end_bogus.second)
            event.end_date = event.start_date + event.duration
            #print('Start date: ', event["start_date"])
            #print("End date:   ", event["end_date"])
            #print()
            program.append(event)

    program = sorted(program, key=lambda x: x.start_date)
    return program

def get_events_to_show(program: list[Event], programs_to_show_count=4) -> list[Event]:
    current_date = datetime.datetime.now()
    # Get events to show
    events_to_show = []
    for event in program:
        if len(events_to_show) >= programs_to_show_count:
            break
        if event.end_date > current_date:
            events_to_show.append(event)

    def format_program(event: Event, cli=False) -> str:
        if len(event.title) > title_max_length:
            event.title = f'{event.title[:title_max_length - 3]}...' # Truncate title by deleting was 1-3 chars and putting ...
        else:
            event.title += " " * (title_max_length - len(event.title)) # Pad title
        event.day = event.start_date.strftime('%a')
        start_time = event.start_date.strftime('%H:%M')
        end_time = event.end_date.strftime('%H:%M')
        event.icon = icons.get(event.room)
        if event.icon == None:
            event.icon = '?'
            print(f"NEW ICON NEEDED!!! for {event.room}")
        event.time = f"{start_time}-{end_time}"
        return f"{event.title}  {event.day}  {start_time}-{end_time} {event.icon}"
    
    for event_to_show in events_to_show:
        event_to_show.pretty = format_program(event_to_show)
        duration_sec = (event_to_show.end_date - event_to_show.start_date).total_seconds()
        progress_sec = (datetime.datetime.now() - event_to_show.end_date).total_seconds()
        event_to_show.progress = 100 + (progress_sec / duration_sec) * 100

    return events_to_show

program: list[Event] = get_program()
events_to_show: list[Event] = get_events_to_show(program)

'''
# Convert to the output string
events_to_show_string = '\n'.join([a.pretty for a in events_to_show])
print(f"{events_to_show_string}\n")
# Write to output file
with open(tmp_file_path, 'w') as tmp_file:
    tmp_file.write(events_to_show_string)
os.rename(tmp_file_path, output_file_path)
print(f'Written to {output_file_path} length: {len(events_to_show_string)}')
'''