// admin-apps.tsx
// Copyright (C) 2020  Dwayne Harris

// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.

// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.

import React, { FC, useEffect } from 'react'
import { useSelector, useDispatch } from 'react-redux'
import { useHistory } from 'react-router-dom'
import { useAuthenticationCheck, useTheme } from '../../hooks'
import { fetchPendingApps, activateApp, setPreinstall } from '../../actions/apps'
import { getAuthenticatedUser, getChecked } from '../../selectors/authentication'
import { getPendingApps } from '../../selectors/apps'
import { handleApiError } from '../../api/errors'
import { setTitle } from '../../utils'
import { AppThunkDispatch } from '../../types'

import Section from '../../components/section'
import Title from '../../components/title'
import Loading from '../../components/pages/loading'
import AppListItem from '../../components/app-list-item'
import HorizontalRule from '../../components/horizontal-rule'
import PrimaryButton from '../../components/controls/primary-button'
import SecondaryButton from '../../components/controls/secondary-button'

const AdminApps: FC = () => {
    useAuthenticationCheck()
    const theme = useTheme()
    const checked = useSelector(getChecked)
    const user = useSelector(getAuthenticatedUser)
    const apps = useSelector(getPendingApps)
    const dispatch = useDispatch<AppThunkDispatch>()
    const history = useHistory()

    const handleActivate = async (id: string) => {
        try {
            await dispatch(activateApp(id))
            await dispatch(fetchPendingApps())
        } catch (err) {
            handleApiError(err, dispatch, history)
        }
    }

    const handleSetPreinstall = async (id: string) => {
        try {
            await dispatch(setPreinstall(id))
            await dispatch(fetchPendingApps())
        } catch (err) {
            handleApiError(err, dispatch, history)
        }
    }

    useEffect(() => {
        setTitle('Admin / Apps')

        const init = async () => {
            try {
                await dispatch(fetchPendingApps())
            } catch (err) {
                handleApiError(err, dispatch, history)
            }
        }

        if (checked) init()
    }, [checked])

    if (!user) return <Loading />
    if (checked && !user.admin) history.push('/')
    
    return (
        <div>
            <Section>
                <Title>Pending Apps</Title>
                <HorizontalRule />
            </Section>

            {apps.map(app => (
                <div className="list-item" style={{ borderColor: theme.backgroundSecondary }} key={app.id}>
                    <AppListItem app={app} />

                    <div className="buttons">
                        <PrimaryButton text="Activate" onClick={() => handleActivate(app.id)} />
                        <SecondaryButton text="Set Preinstall" onClick={() => handleSetPreinstall(app.id)} />
                    </div>
                </div>
            ))}
        </div>
    )
}

export default AdminApps