#!/bin/bash

#=================================================
# GENERIC START
#=================================================
# IMPORT GENERIC HELPERS
#=================================================

source _common.sh
source ynh_systemd_action
source /usr/share/yunohost/helpers

#=================================================
# MANAGE SCRIPT FAILURE
#=================================================

ynh_clean_setup () {
	### Remove this function if there's nothing to clean before calling the remove script.
	ynh_clean_check_starting
}
# Exit if an error occurs during the execution of the script
ynh_abort_if_errors

#=================================================
# RETRIEVE ARGUMENTS FROM THE MANIFEST
#=================================================

domain=$YNH_APP_ARG_DOMAIN
path_url="/"
admin=$YNH_APP_ARG_ADMIN
is_public=$YNH_APP_ARG_IS_PUBLIC
password=$YNH_APP_ARG_PASSWORD
name=$YNH_APP_ARG_NAME
registration=$YNH_APP_ARG_REGISTRATION
cache=$YNH_APP_ARG_CACHE
size=$YNH_APP_ARG_SIZE
random_key=$(ynh_string_random 64)
admin_email=$(ynh_user_get_info $admin 'mail')
admin_pass_reset_url=""

## Bypass package_checker name not compatible with writefreely
if [ "$admin" = "package_checker" ]
then
	admin="test"
fi


### If it's a multi-instance app, meaning it can be installed several times independently
### The id of the app as stated in the manifest is available as $YNH_APP_ID
### The instance number is available as $YNH_APP_INSTANCE_NUMBER (equals "1", "2", ...)
### The app instance name is available as $YNH_APP_INSTANCE_NAME
###    - the first time the app is installed, YNH_APP_INSTANCE_NAME = ynhexample
###    - the second time the app is installed, YNH_APP_INSTANCE_NAME = ynhexample__2
###    - ynhexample__{N} for the subsequent installations, with N=3,4, ...
### The app instance name is probably what interests you most, since this is
### guaranteed to be unique. This is a good unique identifier to define installation path,
### db names, ...
app=$YNH_APP_INSTANCE_NAME

#=================================================
# CHECK IF THE APP CAN BE INSTALLED WITH THESE ARGS
#=================================================

### If the app uses nginx as web server (written in HTML/PHP in most cases), the final path should be "/var/www/$app".
### If the app provides an internal web server (or uses another application server such as uwsgi), the final path should be "/opt/yunohost/$app"
final_path=/var/www/$app
test ! -e "$final_path" || ynh_die "This path already contains a folder"

# Normalize the url path syntax
path_url=$(ynh_normalize_url_path $path_url)

# Register (book) web path
ynh_webpath_register $app $domain $path_url

#=================================================
# STORE SETTINGS FROM MANIFEST
#=================================================

ynh_app_setting_set $app domain $domain
ynh_app_setting_set $app path $path_url
ynh_app_setting_set $app admin $admin
ynh_app_setting_set $app is_public $is_public
ynh_app_setting_set "$app" name         "$name"
ynh_app_setting_set "$app" registration "$registration"
ynh_app_setting_set "$app" cache        "$cache"
ynh_app_setting_set "$app" size         "$size"
ynh_app_setting_set "$app" admin_email  "$admin_email"
ynh_app_setting_set "$app" random_key   "$random_key"

#=================================================
# STANDARD MODIFICATIONS
#=================================================
# FIND AND OPEN A PORT
#=================================================

### Use these lines if you have to open a port for the application
### `ynh_find_port` will find the first available port starting from the given port.
### If you're not using these lines:
###		- Remove the section "CLOSE A PORT" in the remove script

# Find a free port
port=$(ynh_find_port 8095)
# Open this port
#yunohost firewall allow --no-upnp TCP $port 2>&1
ynh_app_setting_set $app port $port

#=================================================
# INSTALL DEPENDENCIES
#=================================================

### `ynh_install_app_dependencies` allows you to add any "apt" dependencies to the package.
### Those deb packages will be installed as dependencies of this package.
### If you're not using this helper:
###		- Remove the section "REMOVE DEPENDENCIES" in the remove script
###		- As well as the section "REINSTALL DEPENDENCIES" in the restore script
###		- And the section "UPGRADE DEPENDENCIES" in the upgrade script

# Add erlang for Debian Jessie 

if [ "$(lsb_release --codename --short)" == "jessie" ]; then
	echo "deb http://packages.erlang-solutions.com/debian jessie contrib" | tee /etc/apt/sources.list.d/erlang-solutions.list
elif 
	[ "$(lsb_release --codename --short)" == "stretch" ]; then
	echo "deb http://packages.erlang-solutions.com/debian stretch contrib" | tee /etc/apt/sources.list.d/erlang-solutions.list
fi
sudo wget https://packages.erlang-solutions.com/debian/erlang_solutions.asc
sudo apt-key add erlang_solutions.asc
sudo rm erlang_solutions.asc

# install dependencies
ynh_install_app_dependencies git build-essential postgresql postgresql-contrib openssl g++ apt-transport-https erlang-inets elixir erlang-dev erlang-parsetools erlang-xmerl erlang-tools

#=================================================
# CREATE A POSTGRESQL DATABASE
#=================================================

### Use these lines if you need a database for the application.
### `ynh_psql_test_if_first_run` will create a master password and set up global settings.
### If you're not using these lines:
###		- Remove the section "BACKUP THE POSTGRESQL DATABASE" in the backup script
###		- Remove also the section "REMOVE THE POSTGRESQL DATABASE" in the remove script
###		- As well as the section "RESTORE THE POSTGRESQL DATABASE" in the restore script

db_name="$app"
db_pwd=$(ynh_string_random 30)
ynh_app_setting_set "$app" db_name "$db_name"
ynh_app_setting_set "$app" db_pwd "$db_pwd"
ynh_psql_test_if_first_run
ynh_psql_create_user "$app" "$db_pwd"
ynh_psql_execute_as_root \
"CREATE DATABASE $db_name ENCODING 'UTF8' LC_COLLATE='C' LC_CTYPE='C' template=template0 OWNER $db_name;"
ynh_psql_execute_as_root "\connect $db_name 
CREATE EXTENSION IF NOT EXISTS unaccent;CREATE EXTENSION IF NOT EXISTS pg_trgm;"
ynh_psql_execute_as_root "\connect $db_name 
CREATE EXTENSION IF NOT EXISTS unaccent;CREATE EXTENSION IF NOT EXISTS citext;"
ynh_psql_execute_as_root "\connect $db_name 
CREATE EXTENSION IF NOT EXISTS \"uuid-ossp\";"

#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================

### `ynh_setup_source` is used to install an app from a zip or tar.gz file,
### downloaded from an upstream source, like a git repository.
### `ynh_setup_source` use the file conf/app.src

ynh_app_setting_set $app final_path $final_path
# Download, check integrity, uncompress and patch the source from app.src
#ynh_setup_source "$final_path/$app"
git clone https://git.pleroma.social/pleroma/pleroma "$final_path/$app"

#=================================================
# NGINX CONFIGURATION
#=================================================

### `ynh_add_nginx_config` will use the file conf/nginx.conf

# Create a dedicated nginx config
ynh_add_nginx_config
if [ $cache -eq 1 ]
then
	cp -rf "../conf/cache.conf" "/etc/nginx/conf.d/$app-cache.conf"
	ynh_replace_string "{APP}"    "$app"  "/etc/nginx/conf.d/$app-cache.conf"
	ynh_replace_string "__SIZE__" "$size" "/etc/nginx/conf.d/$app-cache.conf"
	ynh_store_file_checksum "/etc/nginx/conf.d/$app-cache.conf"
	ynh_replace_string  "{APP}"     "$app"  "../conf/media.conf"
	ynh_replace_string  "__PORT__"  "$port" "../conf/media.conf"
	sudo su -c "cat ../conf/media.conf >> /etc/nginx/conf.d/$domain.d/$app.conf"
	ynh_store_file_checksum "/etc/nginx/conf.d/$domain.d/$app.conf"
fi

#=================================================
# CREATE DEDICATED USER
#=================================================

# Create a system user
ynh_system_user_create "$app" "$final_path"

#=================================================
# PHP-FPM CONFIGURATION
#=================================================

### `ynh_add_fpm_config` is used to set up a PHP config.
### You can remove it if your app doesn't use PHP.
### `ynh_add_fpm_config` will use the files conf/php-fpm.conf and conf/php-fpm.ini
### If you're not using these lines:
###		- You can remove these files in conf/.
###		- Remove the section "BACKUP THE PHP-FPM CONFIGURATION" in the backup script
###		- Remove also the section "REMOVE PHP-FPM CONFIGURATION" in the remove script
###		- As well as the section "RESTORE THE PHP-FPM CONFIGURATION" in the restore script
###		With the reload at the end of the script.
###		- And the section "PHP-FPM CONFIGURATION" in the upgrade script

# Create a dedicated php-fpm config
#ynh_add_fpm_config

#=================================================
# SPECIFIC SETUP
#=================================================
# MODIFY A CONFIG FILE
#=================================================
cp -f ../conf/generated_config.exs "$final_path/$app/config/prod.secret.exs"

ynh_replace_string "__DOMAIN__"        "$domain"        "$final_path/$app/config/prod.secret.exs"
ynh_replace_string "__KEY__"           "$random_key"    "$final_path/$app/config/prod.secret.exs"
ynh_replace_string "__INSTANCE_NAME__" "$name"          "$final_path/$app/config/prod.secret.exs"
ynh_replace_string "__DB_NAME__"       "$db_name"           "$final_path/$app/config/prod.secret.exs"
ynh_replace_string "__DB_PWD__"        "$db_pwd"        "$final_path/$app/config/prod.secret.exs"
ynh_replace_string "__ADMIN_EMAIL__"   "$admin_email"   "$final_path/$app/config/prod.secret.exs"
ynh_replace_string "__PORT__"          "$port"          "$final_path/$app/config/prod.secret.exs"

if [ $cache -eq 1 ]
then
	ynh_replace_string "__MEDIA_CACHE__"    "true"        "$final_path/$app/config/prod.secret.exs"
else
	ynh_replace_string "__MEDIA_CACHE__"    "false"        "$final_path/$app/config/prod.secret.exs"
fi

#  Set registrations open/closed
if [ $registration -eq 1 ]
then
 ynh_replace_string "__REG__" "true"  "$final_path/$app/config/prod.secret.exs"
else
 ynh_replace_string "__REG__" "false" "$final_path/$app/config/prod.secret.exs"
fi

#Desactivate default frontend 
cp -f ../conf/config.exs "$final_path/$app/config/config.exs"

#Desactivate Pleroma.Web.Endpoint
cp -f ../conf/prod.exs "$final_path/$app/config/prod.exs"

#=================================================
# MAKE SETUP
#=================================================
# Give permission to the final_path
chown -R "$app":"$app" "$final_path"

pushd $final_path/$app
    # App setup and db migration
    sudo -u "$app" MIX_ENV=prod mix local.hex --force
    sudo -u "$app" MIX_ENV=prod mix local.rebar --force
    sudo -u "$app" MIX_ENV=prod mix deps.get
    sudo -u "$app" MIX_ENV=prod mix ecto.migrate --force

    # Add user
    sudo -u "$app" MIX_ENV=prod mix pleroma.user new "$admin" "$admin_email" --password "$password" --moderator --admin -y

	#Generate key pair
    sudo -u "$app" MIX_ENV=prod mix web_push.gen.keypair >> "config/prod.secret.exs"
	ynh_replace_string "administrator@example.com" "__ADMIN_EMAIL__" "$final_path/$app/config/prod.secret.exs" 
popd


#=================================================
# SETUP SYSTEMD
#=================================================

### `ynh_systemd_config` is used to configure a systemd script for an app.
### It can be used for apps that use sysvinit (with adaptation) or systemd.
### Have a look at the app to be sure this app needs a systemd script.
### `ynh_systemd_config` will use the file conf/systemd.service
### If you're not using these lines:
###		- You can remove those files in conf/.
###		- Remove the section "BACKUP SYSTEMD" in the backup script
###		- Remove also the section "STOP AND REMOVE SERVICE" in the remove script
###		- As well as the section "RESTORE SYSTEMD" in the restore script
###		- And the section "SETUP SYSTEMD" in the upgrade script

# Create a dedicated systemd config
ynh_add_systemd_config

#=================================================
# SETUP APPLICATION WITH CURL
#=================================================

### Use these lines only if the app installation needs to be finalized through
### web forms. We generally don't want to ask the final user,
### so we're going to use curl to automatically fill the fields and submit the
### forms.

# Set right permissions for curl install
#chown -R $app: $final_path

# Set the app as temporarily public for curl call
#ynh_app_setting_set $app skipped_uris "/"
# Reload SSOwat config
#yunohost app ssowatconf

# Reload Nginx
#systemctl reload nginx

# Installation with curl
#ynh_local_curl "/INSTALL_PATH" "key1=value1" "key2=value2" "key3=value3"

# Remove the public access
#if [ $is_public -eq 0 ]
#then
#	ynh_app_setting_delete $app skipped_uris
#fi

#=================================================
# MODIFY A CONFIG FILE
#=================================================

### `ynh_replace_string` is used to replace a string in a file.
### (It's compatible with sed regular expressions syntax)

#ynh_replace_string "match_string" "replace_string" "$final_path/$app/config/prod.secret.exs"

#=================================================
# STORE THE CONFIG FILE CHECKSUM
#=================================================

### `ynh_store_file_checksum` is used to store the checksum of a file.
### That way, during the upgrade script, by using `ynh_backup_if_checksum_is_different`,
### you can make a backup of this file before modifying it again if the admin had modified it.

# Calculate and store the config file checksum into the app settings
ynh_store_file_checksum "$final_path/$app/config/prod.secret.exs"

#=================================================
# GENERIC FINALIZATION
#=================================================
# SECURE FILES AND DIRECTORIES
#=================================================

### For security reason, any app should set the permissions to root: before anything else.
### Then, if write authorization is needed, any access should be given only to directories
### that really need such authorization.

# Set permissions to app files
chown -R "$app":"$app" "$final_path"

#=================================================
# SETUP LOGROTATE
#=================================================

### `ynh_use_logrotate` is used to configure a logrotate configuration for the logs of this app.
### Use this helper only if there is effectively a log file for this app.
### If you're not using this helper:
###		- Remove the section "BACKUP LOGROTATE" in the backup script
###		- Remove also the section "REMOVE LOGROTATE CONFIGURATION" in the remove script
###		- As well as the section "RESTORE THE LOGROTATE CONFIGURATION" in the restore script
###		- And the section "SETUP LOGROTATE" in the upgrade script

# Use logrotate to manage application logfile(s)
ynh_use_logrotate

#=================================================
# ADVERTISE SERVICE IN ADMIN PANEL
#=================================================

### `yunohost service add` is a CLI yunohost command to add a service in the admin panel.
### You'll find the service in the 'services' section of YunoHost admin panel.
### This CLI command would be useless if the app does not have any services (systemd or sysvinit)
### If you're not using these lines:
###		- You can remove these files in conf/.
###		- Remove the section "REMOVE SERVICE FROM ADMIN PANEL" in the remove script
###		- As well as the section ADVERTISE SERVICE IN ADMIN PANEL" in the restore script

#yunohost service add $app --log "/var/log/$app/APP.log"
# if using yunohost version 3.2 or more in the 'manifest.json', a description can be added
yunohost service add $app --description "$app daemon for Pleroma" --log "/var/log/$app/$app.log"

#=================================================
# SETUP SSOWAT
#=================================================

# Make app public if necessary
if [ $is_public -eq 1 ]
then
	# unprotected_uris allows SSO credentials to be passed anyway.
	ynh_app_setting_set $app unprotected_uris "/"
fi

#=================================================
# RELOAD NGINX
#=================================================

systemctl reload nginx

#=================================================
# START SERVICE
#=================================================

ynh_systemd_action --action=start --service_name=$app --log_path=systemd --line_match="Running Pleroma.Web.Endpoint"