#!/bin/bash
#
#  _____               _           _
# |   __|___ ___ ___ _| |___ _____| |_ ___ ___ ___
# |   __|  _| -_| -_| . | . |     | . | . |   | -_|
# |__|  |_| |___|___|___|___|_|_|_|___|___|_|_|___|
#
#                              Freedom in the Cloud
#
# Pixelfed app
#
# Requires php 7.1.3 but debian version is 7.0.27
#
# License
# =======
#
# Copyright (C) 2018 Bob Mottram <bob@freedombone.net>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

VARIANTS=''

IN_DEFAULT_INSTALL=0
SHOW_ON_ABOUT=1

PIXELFED_DOMAIN_NAME=
PIXELFED_CODE=
PIXELFED_ONION_PORT=9324
PIXELFED_REPO="https://github.com/dansup/pixelfed"
PIXELFED_COMMIT='9fbc5d0902fbc2042a6d2bb698cc3802e7b25508'

# These parameters are used by the FreedomBox mobile app
PIXELFED_SHORT_DESCRIPTION='Federated image sharing'
PIXELFED_DESCRIPTION='Federated image sharing'
PIXELFED_MOBILE_APP_URL=

pixelfed_variables=(ONION_ONLY
                    PIXELFED_DOMAIN_NAME
                    PIXELFED_CODE
                    DDNS_PROVIDER
                    MY_USERNAME)

function logging_on_pixelfed {
    echo -n ''
}

function logging_off_pixelfed {
    echo -n ''
}

function remove_user_pixelfed {
    remove_username="$1"

    "${PROJECT_NAME}-pass" -u "$remove_username" --rmapp pixelfed
}

function add_user_pixelfed {
    new_username="$1"
    new_user_password="$2"

    "${PROJECT_NAME}-pass" -u "$new_username" -a pixelfed -p "$new_user_password"
    echo '0'
}

function install_interactive_pixelfed {
    if [ ! "$ONION_ONLY" ]; then
        ONION_ONLY='no'
    fi

    if [[ "$ONION_ONLY" != "no" ]]; then
        PIXELFED_DOMAIN_NAME='pixelfed.local'
        write_config_param "PIXELFED_DOMAIN_NAME" "$PIXELFED_DOMAIN_NAME"
    else
        interactive_site_details "pixelfed" "PIXELFED_DOMAIN_NAME" "PIXELFED_CODE"
    fi
    APP_INSTALLED=1
}

function change_password_pixelfed {
    curr_username="$1"
    new_user_password="$2"

    read_config_param 'PIXELFED_DOMAIN_NAME'

    "${PROJECT_NAME}-pass" -u "$curr_username" -a pixelfed -p "$new_user_password"
}

function pixelfed_create_database {
    if [ -f "$IMAGE_PASSWORD_FILE" ]; then
        PIXELFED_ADMIN_PASSWORD="$(printf "%d" "$(cat "")")"
    else
        if [ ! "$PIXELFED_ADMIN_PASSWORD" ]; then
            PIXELFED_ADMIN_PASSWORD=$(create_password "${MINIMUM_PASSWORD_LENGTH}")
        fi
    fi
    if [ ! "$PIXELFED_ADMIN_PASSWORD" ]; then
        return
    fi

    create_database pixelfed "$PIXELFED_ADMIN_PASSWORD" "$MY_USERNAME"
}

function reconfigure_pixelfed {
    # This is used if you need to switch identity. Dump old keys and generate new ones
    echo -n ''
}

function configure_interactive_pixelfed {
    W=(1 $"Option 1"
       2 $"Option 2")

    while true
    do
        # shellcheck disable=SC2068
        selection=$(dialog --backtitle $"Freedombone Administrator Control Panel" --title $"pixelfed" --menu $"Choose an operation, or ESC for main menu:" 14 70 3 "${W[@]}" 3>&2 2>&1 1>&3)

        if [ ! "$selection" ]; then
           break
        fi
        case $selection in
            1) # call some function for option 1
               ;;
            2) # call some function for option 2
               ;;
        esac
    done
}

function upgrade_pixelfed {
    CURR_PIXELFED_COMMIT=$(get_completion_param "pixelfed commit")
    if [[ "$CURR_PIXELFED_COMMIT" == "$PIXELFED_COMMIT" ]]; then
        return
    fi

    if grep -q "pixelfed domain" "$COMPLETION_FILE"; then
        PIXELFED_DOMAIN_NAME=$(get_completion_param "pixelfed domain")
    fi

    # update to the next commit
    set_repo_commit "/var/www/$PIXELFED_DOMAIN_NAME/htdocs" "pixelfed commit" "$PIXELFED_COMMIT" "$PIXELFED_REPO"

    cd "/var/www/${PIXELFED_DOMAIN_NAME}/htdocs" || exit 634873561
    install_composer

    chown -R www-data:www-data "/var/www/${PIXELFED_DOMAIN_NAME}/htdocs"
}

function backup_local_pixelfed {
    PIXELFED_DOMAIN_NAME='pixelfed'
    if grep -q "pixelfed domain" "$COMPLETION_FILE"; then
        PIXELFED_DOMAIN_NAME=$(get_completion_param "pixelfed domain")
    fi

    source_directory=/var/www/${PIXELFED_DOMAIN_NAME}/htdocs

    suspend_site "${PIXELFED_DOMAIN_NAME}"

    dest_directory=pixelfed
    backup_directory_to_usb "$source_directory" $dest_directory

    backup_database_to_usb pixelfed

    restart_site
}

function restore_local_pixelfed {
    if ! grep -q "pixelfed domain" "$COMPLETION_FILE"; then
        return
    fi
    PIXELFED_DOMAIN_NAME=$(get_completion_param "pixelfed domain")
    if [ ! "$PIXELFED_DOMAIN_NAME" ]; then
        return
    fi
    suspend_site "${PIXELFED_DOMAIN_NAME}"
    temp_restore_dir=/root/temppixelfed
    pixelfed_dir=/var/www/${PIXELFED_DOMAIN_NAME}/htdocs

    pixelfed_create_database

    restore_database pixelfed
    if [ -d $temp_restore_dir ]; then
        rm -rf $temp_restore_dir
    fi

    restore_directory_from_usb $temp_restore_dir pixelfed
    if [ -d $temp_restore_dir ]; then
        if [ -d "$temp_restore_dir$pixelfed_dir" ]; then
            cp -rp "$temp_restore_dir$pixelfed_dir"/* "$pixelfed_dir"/
        else
            if [ ! -d "$pixelfed_dir" ]; then
                mkdir "$pixelfed_dir"
            fi
            cp -rp "$temp_restore_dir"/* "$pixelfed_dir"/
        fi
        chown -R www-data:www-data "$pixelfed_dir"
        rm -rf $temp_restore_dir
    fi
    restart_site
}

function backup_remote_pixelfed {
    PIXELFED_DOMAIN_NAME='pixelfed'
    if grep -q "pixelfed domain" "$COMPLETION_FILE"; then
        PIXELFED_DOMAIN_NAME=$(get_completion_param "pixelfed domain")
    fi

    source_directory=/var/www/${PIXELFED_DOMAIN_NAME}/htdocs

    suspend_site "${PIXELFED_DOMAIN_NAME}"

    dest_directory=pixelfed
    backup_directory_to_friend "$source_directory" $dest_directory
    backup_database_to_friend pixelfed


    restart_site
}

function restore_remote_pixelfed {
    if ! grep -q "pixelfed domain" "$COMPLETION_FILE"; then
        return
    fi
    PIXELFED_DOMAIN_NAME=$(get_completion_param "pixelfed domain")
    if [ ! "$PIXELFED_DOMAIN_NAME" ]; then
        return
    fi
    suspend_site "${PIXELFED_DOMAIN_NAME}"
    temp_restore_dir=/root/temppixelfed
    pixelfed_dir=/var/www/${PIXELFED_DOMAIN_NAME}/htdocs

    pixelfed_create_database

    restore_database_from_friend pixelfed
    if [ -d "$temp_restore_dir" ]; then
        rm -rf $temp_restore_dir
    fi

    restore_directory_from_friend $temp_restore_dir pixelfed
    if [ -d $temp_restore_dir ]; then
        if [ -d "$temp_restore_dir$pixelfed_dir" ]; then
            cp -rp "$temp_restore_dir$pixelfed_dir"/* "$pixelfed_dir"/
        else
            if [ ! -d "$pixelfed_dir" ]; then
                mkdir "$pixelfed_dir"
            fi
            cp -rp $temp_restore_dir/* "$pixelfed_dir"/
        fi
        chown -R www-data:www-data "$pixelfed_dir"
        rm -rf $temp_restore_dir
    fi
    restart_site
}

function remove_pixelfed {
    nginx_dissite "$PIXELFED_DOMAIN_NAME"
    remove_certs "$PIXELFED_DOMAIN_NAME"


    if [ -d "/var/www/$PIXELFED_DOMAIN_NAME" ]; then
        rm -rf "/var/www/$PIXELFED_DOMAIN_NAME"
    fi
    if [ -f "/etc/nginx/sites-available/$PIXELFED_DOMAIN_NAME" ]; then
        rm "/etc/nginx/sites-available/$PIXELFED_DOMAIN_NAME"
    fi
    drop_database pixelfed
    remove_onion_service pixelfed "${PIXELFED_ONION_PORT}"
    if grep -q "pixelfed" /etc/crontab; then
        sed -i "/pixelfed/d" /etc/crontab
    fi
    remove_app pixelfed
    remove_completion_param install_pixelfed
    sed -i '/pixelfed/d' "$COMPLETION_FILE"

    remove_ddns_domain "$PIXELFED_DOMAIN_NAME"
}

function install_pixelfed {
    install_mariadb

    get_mariadb_password

    apt-get -yq install php-gettext php-curl php-gd php-mysql git curl
    apt-get -yq install memcached php-memcached php-intl exiftool libfcgi0ldbl
    apt-get -yq install redis-server php-redis autoconf imagemagick imagemagick-dev libtool
    apt-get -yq install jpegoptim

    if [ ! "$PIXELFED_DOMAIN_NAME" ]; then
        echo $'No domain name was given'
        exit 3568356
    fi

    if [ -d "/var/www/$PIXELFED_DOMAIN_NAME/htdocs" ]; then
        rm -rf "/var/www/$PIXELFED_DOMAIN_NAME/htdocs"
    fi
    if [ -d /repos/pixelfed ]; then
        mkdir "/var/www/$PIXELFED_DOMAIN_NAME/htdocs"
        cp -r -p /repos/pixelfed/. "/var/www/$PIXELFED_DOMAIN_NAME/htdocs"
        cd "/var/www/$PIXELFED_DOMAIN_NAME/htdocs" || exit 324687356
        git pull
    else
        git_clone "$PIXELFED_REPO" "/var/www/$PIXELFED_DOMAIN_NAME/htdocs"
    fi

    if [ ! -d "/var/www/$PIXELFED_DOMAIN_NAME/htdocs" ]; then
        echo $'Unable to clone pixelfed repo'
        exit 87525
    fi

    cd "/var/www/$PIXELFED_DOMAIN_NAME/htdocs" || exit 36587356
    git checkout "$PIXELFED_COMMIT" -b "$PIXELFED_COMMIT"
    set_completion_param "pixelfed commit" "$PIXELFED_COMMIT"

    install_composer --no-dev

    if [ ! -f "/var/www/$PIXELFED_DOMAIN_NAME/htdocs/.env.example" ]; then
        echo $"Can't find .env.example"
        exit 346826285
    fi
    cp "/var/www/$PIXELFED_DOMAIN_NAME/htdocs/.env.example" "/var/www/$PIXELFED_DOMAIN_NAME/htdocs/.env"

    php artisan key:generate
    php artisan storage:link

    chmod g+w "/var/www/$PIXELFED_DOMAIN_NAME/htdocs"
    chown -R www-data:www-data "/var/www/$PIXELFED_DOMAIN_NAME/htdocs"

    pixelfed_create_database

    add_ddns_domain "$PIXELFED_DOMAIN_NAME"

    PIXELFED_ONION_HOSTNAME=$(add_onion_service pixelfed 80 "${PIXELFED_ONION_PORT}")

    pixelfed_nginx_site=/etc/nginx/sites-available/$PIXELFED_DOMAIN_NAME
    if [[ "$ONION_ONLY" == "no" ]]; then
        nginx_http_redirect "$PIXELFED_DOMAIN_NAME" "index index.php"
        { echo 'server {';
          echo '  listen 443 ssl;';
          echo '  #listen [::]:443 ssl;';
          echo "  server_name $PIXELFED_DOMAIN_NAME;";
          echo ''; } >> "$pixelfed_nginx_site"
        nginx_compress "$PIXELFED_DOMAIN_NAME"
        echo '' >> "$pixelfed_nginx_site"
        echo '  # Security' >> "$pixelfed_nginx_site"
        nginx_ssl "$PIXELFED_DOMAIN_NAME"

        nginx_security_options "$PIXELFED_DOMAIN_NAME"

        { echo '  add_header Strict-Transport-Security max-age=15768000;';
          echo '';
          echo '    access_log /dev/null;';
          echo '    error_log /dev/null;';
          echo '';
          echo "    root /var/www/$PIXELFED_DOMAIN_NAME/htdocs;";
          echo '';
          echo '  index index.php;';
          echo '  location ~ \.php {';
          echo '    include snippets/fastcgi-php.conf;';
          echo '    fastcgi_pass unix:/var/run/php/php7.0-fpm.sock;';
          echo '    fastcgi_read_timeout 30;';
          echo '    fastcgi_param HTTPS on;';
          echo '  }';
          echo '';
          echo '  # Location';
          echo '  location / {'; } >> "$pixelfed_nginx_site"
        nginx_limits "$PIXELFED_DOMAIN_NAME" '15m'
        { echo "    try_files \$uri \$uri/ /index.php?\$args;";
          echo '  }';
          echo '}'; } >> "$pixelfed_nginx_site"
    else
        echo -n '' > "$pixelfed_nginx_site"
    fi
    { echo 'server {';
      echo "    listen 127.0.0.1:$PIXELFED_ONION_PORT default_server;";
      echo "    server_name $PIXELFED_ONION_HOSTNAME;";
      echo ''; } >> "$pixelfed_nginx_site"
    nginx_compress "$PIXELFED_DOMAIN_NAME"
    echo '' >> "$pixelfed_nginx_site"
    nginx_security_options "$PIXELFED_DOMAIN_NAME"
    { echo '';
      echo '    access_log /dev/null;';
      echo '    error_log /dev/null;';
      echo '';
      echo "    root /var/www/$PIXELFED_DOMAIN_NAME/htdocs;";
      echo '';
      echo '  index index.php;';
      echo '  location ~ \.php {';
      echo '    include snippets/fastcgi-php.conf;';
      echo '    fastcgi_pass unix:/var/run/php/php7.0-fpm.sock;';
      echo '    fastcgi_read_timeout 30;';
      echo '    fastcgi_param HTTPS off;';
      echo '  }';
      echo '';
      echo '  # Location';
      echo '  location / {'; } >> "$pixelfed_nginx_site"
    nginx_limits "$PIXELFED_DOMAIN_NAME" '15m'
    { echo "    try_files \$uri \$uri/ index.php?\$args;";
      echo '  }';
      echo '}'; } >> "$pixelfed_nginx_site"

    configure_php

    cd "/var/www/$PIXELFED_DOMAIN_NAME/htdocs" || exit 36587357

    cp "/var/www/$PIXELFED_DOMAIN_NAME/htdocs/.env.example" "/var/www/$PIXELFED_DOMAIN_NAME/htdocs/.env"

    if [[ "$ONION_ONLY" != 'no' ]]; then
        sed -i "s|APP_URL=http://.*|APP_URL=https://\$PIXELFED_DOMAIN_NAME|g" "/var/www/$PIXELFED_DOMAIN_NAME/htdocs/.env"
    else
        sed -i "s|APP_URL=http://.*|APP_URL=http://\$PIXELFED_ONION_HOSTNAME|g" "/var/www/$PIXELFED_DOMAIN_NAME/htdocs/.env"
    fi
    sed -i "s|DB_DATABASE=.*|DB_DATABASE=pixelfed|g" "/var/www/$PIXELFED_DOMAIN_NAME/htdocs/.env"
    sed -i "s|DB_USERNAME=.*|DB_USERNAME=root|g" "/var/www/$PIXELFED_DOMAIN_NAME/htdocs/.env"
    sed -i "s|DB_PASSWORD=.*|DB_PASSWORD=$MARIADB_PASSWORD|g" "/var/www/$PIXELFED_DOMAIN_NAME/htdocs/.env"
    sed -i "s|MAIL_HOST=.*|MAIL_HOST=localhost|g" "/var/www/$PIXELFED_DOMAIN_NAME/htdocs/.env"
    sed -i "s|MAIL_PORT=.*|MAIL_PORT=25|g" "/var/www/$PIXELFED_DOMAIN_NAME/htdocs/.env"

    chown -R www-data:www-data "/var/www/$PIXELFED_DOMAIN_NAME/htdocs"

    create_site_certificate "$PIXELFED_DOMAIN_NAME" 'yes'

    cd "/var/www/$PIXELFED_DOMAIN_NAME/htdocs" || exit 365845635

    # hack: within vendor/laravel/framework/src/Illuminate/database/Schema/Blueprint.php
    # change return $this->addColumn('json', $column);
    # to return $this->addColumn('text', $column);
    if [ -f vendor/laravel/framework/src/Illuminate/database/Schema/Blueprint.php ]; then
        sed -i "s|\$this->addColumn('json', \$column);|\$this->addColumn('text', \$column);|g" vendor/laravel/framework/src/Illuminate/database/Schema/Blueprint.php
    else
        find . -name Blueprint.php
    fi

    php artisan migrate:fresh

    nginx_ensite "$PIXELFED_DOMAIN_NAME"

    systemctl restart mariadb

    systemctl restart php7.0-fpm

    systemctl restart nginx

    "${PROJECT_NAME}-pass" -u "$MY_USERNAME" -a pixelfed -p "$PIXELFED_ADMIN_PASSWORD"
    set_completion_param "pixelfed domain" "$PIXELFED_DOMAIN_NAME"

    APP_INSTALLED=1
}

# NOTE: deliberately there is no "exit 0"