#!/usr/bin/env python
# encoding: utf-8

# The MIT License (MIT)

# Copyright (c) 2020- CNRS

# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:

# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.

# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.

# AUTHORS
# Hervé BREDIN - http://herve.niderb.fr
# Alexis PLAQUET


import typer
from enum import Enum
import math
from typing import Text
from pyannote.database import Database
from pyannote.database import registry
from pyannote.database.protocol import CollectionProtocol
from pyannote.database.protocol import SpeakerDiarizationProtocol
from pyannote.core import Annotation

app = typer.Typer()


class Task(str, Enum):
    Any = "Any"
    Protocol = "Protocol"
    Collection = "Collection"
    SpeakerDiarization = "SpeakerDiarization"
    SpeakerVerification = "SpeakerVerification"


@app.command("database")
def database():
    """Print list of databases"""
    for database in registry.databases:
        typer.echo(f"{database}")


@app.command("task")
def task(
    database: str = typer.Option(
        "",
        "--database",
        "-d",
        metavar="DATABASE",
        help="Filter tasks by DATABASE.",
        case_sensitive=False,
    )
):
    """Print list of tasks"""

    if database == "":
        tasks = []
    else:
        db: Database = registry.get_database(database)
        tasks = db.get_tasks()

    for task in tasks:
        typer.echo(f"{task}")


@app.command("protocol")
def protocol(
    database: str = typer.Option(
        "",
        "--database",
        "-d",
        metavar="DATABASE",
        help="Filter protocols by DATABASE.",
        case_sensitive=False,
    ),
    task: Task = typer.Option(
        "Any", "--task", "-t", help="Filter protocols by TASK.", case_sensitive=False,
    ),
):
    """Print list of protocols"""

    if database == "":
        databases = list(registry.databases)
    else:
        databases = [database]

    for database_name in databases:
        db: Database = registry.get_database(database_name)
        tasks = db.get_tasks() if task == "Any" else [task]
        for task_name in tasks:
            try:
                protocols = db.get_protocols(task_name)
            except KeyError:
                continue
            for protocol in protocols:
                typer.echo(f"{database_name}.{task_name}.{protocol}")


def duration_to_str(seconds: float) -> Text:
    hours = math.floor(seconds / 3600)
    minutes = math.floor((seconds - 3600 * hours) / 60)
    return f"{hours}h{minutes:02d}m"


@app.command("info")
def info(protocol: str):
    """Print protocol detailed information"""

    p = registry.get_protocol(protocol)

    if isinstance(p, SpeakerDiarizationProtocol):
        subsets = ["train", "development", "test"]
        skip_annotation = False
        skip_annotated = False
    elif isinstance(p, CollectionProtocol):
        subsets = ["files"]
        skip_annotation = True
        skip_annotated = True
    else:
        typer.echo("Only collections and speaker diarization protocols are supported.")
        typer.Exit(code=1)

    for subset in subsets:

        num_files = 0
        speakers = set()
        duration = 0.0
        speech = 0.0

        def iterate():
            try:
                for file in getattr(p, subset)():
                    yield file
            except (AttributeError, NotImplementedError):
                return

        for file in iterate():
            num_files += 1

            if not skip_annotation:
                annotation = file["annotation"] or Annotation(uri=file["uri"])
                speakers.update(annotation.labels())
                speech += annotation.get_timeline().support().duration()

            if not skip_annotated:
                annotated = file["annotated"]
                duration += annotated.duration()

        if num_files > 0:
            typer.secho(
                f"{subset}", fg=typer.colors.BRIGHT_GREEN, underline=True, bold=True
            )
            typer.echo(f"   {num_files} files")
            if not skip_annotated:
                typer.echo(f"   {duration_to_str(duration)} annotated")

            if not skip_annotation:
                typer.echo(
                    f"   {duration_to_str(speech)} of speech ({100 * speech / duration:.0f}%)"
                )
                typer.echo(f"   {len(speakers)} speakers")


def main():
    app()