#!/bin/bash

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

source _common.sh
source ynh_detect_arch__2
source /usr/share/yunohost/helpers

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

ynh_clean_setup () {
	ynh_clean_check_starting
}
# Exit if an error occurs during the execution of the script
ynh_abort_if_errors

#=================================================
# RETRIEVE ARGUMENTS FROM THE MANIFEST
#=================================================
ynh_script_progression --message="Retrieving 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=$(ynh_string_random --length=64)
signing_salt=$(ynh_string_random --length=8)
admin_email=$(ynh_user_get_info --username=$admin --key="mail")

## Bypass package_checker name not compatible with pleroma
if [ ${PACKAGE_CHECK_EXEC:-0} -eq 1 ]; then
    admin="test"
fi

app=$YNH_APP_INSTANCE_NAME

#=================================================
# CHECK IF THE APP CAN BE INSTALLED WITH THESE ARGS
#=================================================
ynh_script_progression --message="Validating installation parameters..."

final_path=/var/www/$app
test ! -e "$final_path" || ynh_die --message="This path already contains a folder"

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

#=================================================
# STORE SETTINGS FROM MANIFEST
#=================================================
ynh_script_progression --message="Storing installation settings..."

ynh_app_setting_set --app=$app --key=domain --value=$domain
ynh_app_setting_set --app=$app --key=path --value=$path_url
ynh_app_setting_set --app=$app --key=admin --value=$admin
ynh_app_setting_set --app=$app --key=is_public --value=$is_public
ynh_app_setting_set --app=$app --key=name --value=$name
ynh_app_setting_set --app=$app --key=registration --value=$registration
ynh_app_setting_set --app=$app --key=cache --value=$cache
ynh_app_setting_set --app=$app --key=size --value=$size
ynh_app_setting_set --app=$app --key=admin_email --value=$admin_email
ynh_app_setting_set --app=$app --key=random_key --value=$random_key
ynh_app_setting_set --app=$app --key=signing_salt --value=$signing_salt

#=================================================
# STANDARD MODIFICATIONS
#=================================================
# FIND AND OPEN A PORT
#=================================================
ynh_script_progression --message="Configuring firewall..."

# Find an available port
port=$(ynh_find_port --port=8095)
ynh_app_setting_set --app=$app --key=port --value=$port

#=================================================
# INSTALL DEPENDENCIES
#=================================================
ynh_script_progression --message="Installing dependencies..."

ynh_install_app_dependencies $pkg_dependencies

#=================================================
# CREATE A POSTGRESQL DATABASE
#=================================================
ynh_script_progression --message="Creating a PostgreSQL database..."

db_name=$(ynh_sanitize_dbid --db_name=$app)
db_user=$db_name
db_pwd=$(ynh_string_random --length=30)
ynh_app_setting_set --app=$app --key=db_name --value=$db_name
ynh_app_setting_set --app=$app --key=db_pwd --value=$db_pwd
ynh_psql_test_if_first_run
ynh_psql_setup_db --db_user=$db_user --db_name=$db_name --db_pwd=$db_pwd
ynh_psql_execute_as_root --sql="CREATE EXTENSION IF NOT EXISTS unaccent;" --database=$db_name
ynh_psql_execute_as_root --sql="CREATE EXTENSION IF NOT EXISTS pg_trgm;" --database=$db_name
ynh_psql_execute_as_root --sql="CREATE EXTENSION IF NOT EXISTS citext;" --database=$db_name
ynh_psql_execute_as_root --sql="CREATE EXTENSION IF NOT EXISTS \"uuid-ossp\";" --database=$db_name

#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================
ynh_script_progression --message="Setting up source files..."

ynh_app_setting_set --app=$app --key=final_path --value=$final_path
# Download, check integrity, uncompress and patch the source from app.src
architecture=$(ynh_detect_arch)
ynh_setup_source --dest_dir="$final_path/$app" --source_id=$architecture

#=================================================
# NGINX CONFIGURATION
#=================================================
ynh_script_progression --message="Configuring nginx web server..."

# 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 --match_string="{APP}" --replace_string="$app" --target_file="/etc/nginx/conf.d/$app-cache.conf"
	ynh_replace_string --match_string="__SIZE__" --replace_string="$size" --target_file="/etc/nginx/conf.d/$app-cache.conf"
	ynh_store_file_checksum --file="/etc/nginx/conf.d/$app-cache.conf"
	ynh_replace_string --match_string="{APP}" --replace_string="$app" --target_file="../conf/media.conf"
	ynh_replace_string --match_string="__PORT__" --replace_string="$port" --target_file="../conf/media.conf"
	cat ../conf/media.conf >> /etc/nginx/conf.d/$domain.d/$app.conf
	ynh_store_file_checksum --file="/etc/nginx/conf.d/$domain.d/$app.conf"
fi

#=================================================
# CREATE DEDICATED USER
#=================================================
ynh_script_progression --message="Configuring system user..."

# Create a system user
ynh_system_user_create --username=$app --home_dir="$final_path"

#=================================================
# SPECIFIC SETUP
#=================================================
# CREATE THE DATA DIRECTORY
#=================================================
ynh_script_progression --message="Creating the data directory..."

# Define app's data directory
datadir="/home/yunohost.app/${app}"

# Create app folders
mkdir -p "$datadir/"
mkdir -p "$datadir/uploads/"
mkdir -p "$datadir/static/"
mkdir -p "$datadir/static/emoji/"

# Give permission to the datadir
chown -R "$app":"$app" "$datadir"

ynh_app_setting_set --app=$app --key=datadir --value="$datadir"

#=================================================
# CREATE THE CONFIG DIRECTORY
#=================================================
ynh_script_progression --message="Creating the config directory..."

mkdir -p /etc/$app
chown -R $app /etc/$app

config="/etc/$app/config.exs"

#=================================================
# SETUP SYSTEMD
#=================================================
ynh_script_progression --message="Configuring a systemd service..."

# Create a dedicated systemd config
ynh_add_systemd_config

#=================================================
# MAKE SETUP
#=================================================
ynh_script_progression --message="Making setup..."

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

pushd $final_path/$app
    #Generate instance
    su "$app" -s $SHELL -lc "$final_path/$app/bin/pleroma_ctl instance gen --force \
    --output $config \
    --output-psql /tmp/setup_db.psql \
    --domain $domain \
    --instance-name \"$name\" \
    --admin-email $admin_email \
    --notify-email $admin_email \
    --dbhost localhost \
    --dbname $db_name \
    --dbuser $db_user \
    --dbpass $db_pwd \
    --rum N \
    --indexable Y \
    --uploads-dir $datadir/uploads \
    --static-dir $datadir/static \
    --listen-ip 127.0.0.1 \
    --listen-port $port \
    --db-configurable Y"
popd

cat "../conf/ldap.exs" >> "$config"

ynh_replace_string --match_string="config :pleroma, configurable_from_database: false" --replace_string="config :pleroma, configurable_from_database: true" --target_file="$config"

pushd $final_path/$app

    su "$app" -s $SHELL -lc "$final_path/$app/bin/pleroma_ctl migrate"

    ynh_systemd_action --service_name=$app --action="start" --log_path=systemd --line_match="Started $app"
    sleep 60

    # Add user
    su "$app" -s $SHELL -lc "$final_path/$app/bin/pleroma_ctl user new $admin $admin_email --password $password --moderator --admin -y"
popd

#=================================================
# STORE THE CONFIG FILE CHECKSUM
#=================================================
ynh_script_progression --message="Storing the config file checksum..."

# Calculate and store the config file checksum into the app settings
ynh_store_file_checksum --file="$config"

#=================================================
# GENERIC FINALIZATION
#=================================================
# SECURE FILES AND DIRECTORIES
#=================================================
ynh_script_progression --message="Securing files and directories..."

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

#=================================================
# INTEGRATE SERVICE IN YUNOHOST
#=================================================
ynh_script_progression --message="Integrating service in YunoHost..."

yunohost service add $app --description "$app daemon for Pleroma" --log_type "systemd"

#=================================================
# SETUP SSOWAT
#=================================================
ynh_script_progression --message="Configuring SSOwat..."

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

#=================================================
# RELOAD NGINX
#=================================================
ynh_script_progression --message="Reloading nginx web server..."

ynh_systemd_action --service_name=nginx --action=reload

#=================================================
# END OF SCRIPT
#=================================================

ynh_script_progression --message="Installation of $app completed"