#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""Invoke tasks."""
import json
import os
import shutil
import webbrowser

from invoke import task

HERE = os.path.abspath(os.path.dirname(__file__))
with open(os.path.join(HERE, "cookiecutter.json"), "r") as fp:
    COOKIECUTTER_SETTINGS = json.load(fp)
# Match default value of app_name from cookiecutter.json
COOKIECUTTER_SETTINGS["app_name"] = "my_flask_app"
COOKIE = os.path.join(HERE, COOKIECUTTER_SETTINGS["app_name"])
REQUIREMENTS = os.path.join(COOKIE, "requirements", "dev.txt")


def _run_npm_command(ctx, command):
    os.chdir(COOKIE)
    ctx.run("npm {0}".format(command), echo=True)
    os.chdir(HERE)


@task
def build(ctx):
    """Build the cookiecutter."""
    ctx.run("cookiecutter {0} --no-input".format(HERE))
    _run_npm_command(ctx, "install")
    _run_npm_command(ctx, "run build")


@task
def clean(ctx):
    """Clean out generated cookiecutter."""
    if os.path.exists(COOKIE):
        shutil.rmtree(COOKIE)
        print("Removed {0}".format(COOKIE))
    else:
        print("App directory does not exist. Skipping.")


def _run_flask_command(ctx, command, *args):
    os.chdir(COOKIE)
    flask_command = "flask {0}".format(command)
    if args:
        flask_command = "{0} {1}".format(flask_command, " ".join(args))
    ctx.run(flask_command, echo=True)


@task(pre=[clean, build])
def test(ctx):
    """Run lint commands and tests."""
    ctx.run("pip install -r {0} --ignore-installed".format(REQUIREMENTS), echo=True)
    _run_npm_command(ctx, "run lint")
    os.chdir(COOKIE)
    shutil.copyfile(os.path.join(COOKIE, ".env.example"), os.path.join(COOKIE, ".env"))
    os.environ["FLASK_ENV"] = "production"
    os.environ["FLASK_DEBUG"] = "0"
    _run_flask_command(ctx, "lint", "--check")
    _run_flask_command(ctx, "test")


@task
def readme(ctx, browse=False):
    ctx.run("rst2html.py README.rst > README.html")
    if browse:
        webbrowser.open_new_tab("README.html")