#!/bin/bash

toolName="pixelfed"
toolTag="dev"
toolPhpDeps=(bcmath ctype curl exif gd iconv intl mbstring redis tokenizer xml zip)
toolDeps="jpegoptim php-imagick"
toolPath="/var/www/pixelfed"

sq_aptOpt=
sq_config=0

sq_phpName=php
sq_PoolConfig=

seq_config() {
  if initSeqConfig "${seq_configName:?}" "${seq_configTemplate:?}" ; then
    sq_config=1
  else
    # End if no configuration file exists
    dry || return 1
  fi

  ## Apt cmdline option to suppress user interaction
  interactive || sq_aptOpt="-y"

  ## Disable error checks if external scripts are used
  ## e.g. error on unbound variables
  #disableErrorCheck

  sq_phpName="php${sc_phpVersion:?}"
  sq_PoolConfig="/etc/php/${sc_phpVersion:?}/fpm/pool.d/www.conf"

  ## Return of non zero value will abort the sequence
  return 0
}


step_1_info() { echo "Updating apt"; }
step_1_alias() { echo "install"; }
step_1() {
  exe apt update
}

step_2_info() { echo -e "Installing $toolName dependencies"; }
step_2() {
  exe apt install "${toolPhpDeps[@]/#/${sq_phpName}-}" $toolDeps ${sq_aptOpt}
  endReturn "Installing deps for $toolName failed"
  exe service ${sq_phpName}-fpm restart
  endReturn "Problems starting $toolName"
}

step_3_info() { echo -e "Get $toolName using git"; }
step_3() {
  exe git clone -b $toolTag https://github.com/pixelfed/pixelfed.git "${toolPath:?}"
  exe cd "${toolPath:?}"
  exe chown -R www-data:www-data "${toolPath:?}" # change user/group to http user and http group
  exe find . -type d -exec chmod 755 {} \; # set all directories to rwx by user/group
  exe find . -type f -exec chmod 644 {} \; # set all files to rw by user/group
}

step_4_info() { echo "Install composer and ${toolName} dependencies"; }
step_4() {
  exe cd "${toolPath:?}"
  exe ${seq_origin:?}/composer.sh -qq install
  exe sudo -u www-data ${sq_phpName:?} composer.phar install --no-ansi --no-interaction --optimize-autoloader
  endReturn "Composer install error"
}

step_5_info() { echo "Create mysql database for $toolName"; }
step_5() {
  exe ${seq_origin:?}/mysql.sh createdb -c utf8mb4
}

step_6_info() { echo "$toolName configuration"; }
step_6() {
  exe cd "${toolPath:?}"
  exe cp .env.example .env
  exe read -p "Edit database settings, hostname, email settings, IMAGE_DRIVER=imagick, etc... (Enter to continue)"
  exe vi .env
  exe ${sq_phpName:?} artisan key:generate
  exe ${sq_phpName:?} artisan config:cache
  exe ${sq_phpName:?} artisan storage:link
  exe ${sq_phpName:?} artisan migrate --force
  exe ${sq_phpName:?} artisan route:cache
  # Needed for using oauth (app like pixeldroid)
  # https://github.com/pixelfed/pixelfed/issues/2654
  exe ${sq_phpName:?} artisan passport:install
}

step_7_info() { echo "Create admin user"; }
step_7() {
  exe cd "${toolPath:?}"
  exe read -p "Create admin user. (Enter to continue)"
  exe ${sq_phpName:?} artisan user:create
}

step_8_info() { echo "Create pixelfed (horzion) service"; }
step_8() {
  addConf -c "${horizonService}" "${horizonServiceLoc}"
  endReturn "Failed to add horizon service"
  exe systemctl daemon-reload
  exe systemctl enable pixelfed.service
  exe service pixelfed start
}
horizonServiceLoc="/etc/systemd/system/pixelfed.service"
horizonService="\
  [Unit]
Description=${toolName}s' Horizon
After=syslog.target
After=network.target
#Requires=mysql.service
Requires=mariadb.service
#Requires=postgresql.service
#Requires=memcached.service
#Requires=redis.service

[Service]
# Modify these two values and uncomment them if you have
# repos with lots of files and get an HTTP error 500 because
# of that
###
#LimitMEMLOCK=infinity
#LimitNOFILE=65535
RestartSec=2s
Type=simple
User=www-data
Group=www-data
WorkingDirectory=${toolPath:?}/
ExecStart=/usr/bin/php ${toolPath:?}/artisan horizon
Restart=always
Environment=

[Install]
WantedBy=multi-user.target"

step_9_info() { echo "Create scheduler cron job"; }
step_9_alias() { echo "scheduler"; }
step_9() {
  local schedulerCron="/etc/cron.d/pixelfedScheduler"
  local schedulerCmd="* * * * * cd $(escpath ${toolPath}) && ${sq_phpName:?} artisan schedule:run >>/dev/null 2>&1"

  addConf -s "$schedulerCmd" "$schedulerCron"
}

step_10_info() { echo "Nginx configuration"; }
step_10() {
  lNginxConfig="$(eval echo "${nginxConfig}")"

  addConf -c "$lNginxConfig" "$nginxConfigLoc"
  exe ln -s "$nginxConfigLoc" "$nginxConfigEnable"
  exe nginx -t
  endReturn "Nginx configuration check error"
  exe service nginx restart
}

nginxConfigLoc="/etc/nginx/sites-available/pixelfed"
nginxConfigEnable="/etc/nginx/sites-enabled/pixelfed"
nginxConfig="\
  upstream php-handler-pixel {
server unix:/var/run/php/${sq_phpName:?}-fpm.sock;
}

map \$http_x_forwarded_proto \$proxy_https {
default '';
https 'on';
}

server {
listen 80;
listen [::]:80;

add_header X-Frame-Options \"SAMEORIGIN\";
add_header X-XSS-Protection \"1; mode=block\";
add_header X-Content-Type-Options \"nosniff\";

# Path to the root of your installation
root ${toolPath}/public;
index index.html index.htm index.php;

charset utf-8;
client_max_body_size 64M;

location / {
    try_files \$uri \$uri/ /index.php?\$query_string;
  }

location = /favicon.ico { access_log off; log_not_found off; }
location = /robots.txt  { access_log off; log_not_found off; }

error_page 404 /index.php;

location ~ \\.php$ {
    try_files \$uri =404;
    fastcgi_split_path_info ^(.+\\.php)(/.+)$;
    fastcgi_pass php-handler-pixel;
    fastcgi_index index.php;
    include fastcgi_params;
    fastcgi_param SCRIPT_FILENAME \$request_filename;
    fastcgi_param PATH_INFO \$fastcgi_path_info;
    # fix preview problem
    fastcgi_param REQUEST_SCHEME  \$http_x_forwarded-proto;
    fastcgi_param HTTPS	      \$proxy_https if_not_empty;
  }

location ~ /\\.(?!well-known).* {
    deny all;
  }
}"

step_20_info() { echo "Reload configuration (.env)"; }
step_20_alias() { echo "newenv"; }
step_20() {
  exe cd ${toolPath:?}
  exe sudo -u www-data ${sq_phpName:?} artisan config:cache
  exe service pixelfed restart
}

step_22_info() { echo "Create new user"; }
step_22_alias() { echo "createuser"; }
step_22() {
  exe cd ${toolPath:?}
  exe ${sq_phpName:?} artisan user:create
}

step_24_info() { echo "Checkout to dev branch. Losing local changes!"; }
step_24_alias() { echo "forcedev"; }
step_24() {
  exe read -p "Are you sure: y/[n]? " answer
  if ! dry ; then
    case $answer in
      [yY])
        ;;
      *)
        return 1
        ;;
    esac
  fi
  exe cd ${toolPath:?}
  exe git fetch --all
  exe git reset --hard origin/dev
  exe git pull origin dev
  exe git checkout dev
}

step_100_info() { echo "Upgrade \"${toolPath}\" to supported tag $toolTag"; }
step_100_alias() { echo "upgrade"; }
step_100() {
  exe cd ${toolPath:?}
  exe git pull origin $toolTag
  endReturn "git pull failed"
  exe git checkout $toolTag
  endReturn "git checkout failed"
}

step_101_info() { echo "Recommended post update procedure"; }
step_101_alias() { echo "postupdate"; }
step_101() {
  exe cd ${toolPath:?}
  exe sudo -u www-data ${sq_phpName:?} composer.phar install
  exe sudo -u www-data ${sq_phpName:?} artisan config:cache
  exe sudo -u www-data ${sq_phpName:?} artisan route:cache
  exe sudo -u www-data ${sq_phpName:?} artisan view:cache
  exe sudo -u www-data ${sq_phpName:?} artisan cache:clear
  exe sudo -u www-data ${sq_phpName:?} artisan migrate --force
  exe sudo -u www-data ${sq_phpName:?} artisan horizon:purge
  exe sudo -u www-data ${sq_phpName:?} artisan horizon:publish
  exe sudo -u www-data ${sq_phpName:?} artisan storage:link
  exe sudo -u www-data ${sq_phpName:?} artisan instance:actor
  echo -n " [I] Restarting pixelfed horzion service..."
  exe service pixelfed restart && echo "ok"
}

# Src: https://docs.pixelfed.org/running-pixelfed/troubleshooting.html
step_102_info() { echo "Fix if horizon services is running but not showing the administration interface"; }
step_102_alias() { echo "fixhorizon"; }
step_102() {
  exe cd ${toolPath:?}
  exe sudo -u www-data ${sq_phpName:?} artisan package:discover
  exe sudo -u www-data ${sq_phpName:?} artisan horizon:install
  exe sudo -u www-data ${sq_phpName:?} artisan route:cache
  echo -n " [I] Restarting pixelfed horzion service..."
  exe service pixelfed restart && echo "ok"
}

# Sequence Revision
readonly sqr_minVersion=16

# Path to sequencer
. sequencer.sh