#!/bin/bash

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

source _common.sh
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
#=================================================

domain=$YNH_APP_ARG_DOMAIN
path_url="/"
admin=$YNH_APP_ARG_ADMIN
password=$(ynh_string_random --length=12)
sitename=$YNH_APP_ARG_SITENAME
random=$(ynh_string_random --length=10)
admin_email=$(ynh_user_get_info --username=$admin --key="mail")

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=$app --key=password --value=$password
ynh_app_setting_set --app=$app --key=sitename --value=$sitename
ynh_app_setting_set --app=$app --key=random --value=$random

#=================================================
# STANDARD MODIFICATIONS
#=================================================
# FIND AND OPEN A PORT
#=================================================
ynh_script_progression --message="Finding an available port..."

# Find an available port
port_lemmy=$(ynh_find_port --port=8536)
ynh_app_setting_set --app=$app --key=port_lemmy --value=$port_lemmy
port_ui=$(ynh_find_port --port=1235)
ynh_app_setting_set --app=$app --key=port_ui --value=$port_ui
port_pictrs=$(ynh_find_port --port=8537)
ynh_app_setting_set --app=$app --key=port_pictrs --value=$port_pictrs
port_iframely=$(ynh_find_port --port=8061)
ynh_app_setting_set --app=$app --key=port_iframely --value=$port_iframely

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

ynh_install_app_dependencies $pkg_dependencies
ynh_install_nodejs --nodejs_version=$NODEJS_VERSION
ynh_use_nodejs
ynh_install_extra_app_dependencies --repo="deb https://dl.yarnpkg.com/debian/ stable main" --package="yarn" --key="https://dl.yarnpkg.com/debian/pubkey.gpg"

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

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

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

ynh_psql_test_if_first_run
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_setup_db --db_user=$db_user --db_name=$db_name --db_pwd=$db_pwd

#=================================================
# 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
ynh_setup_source --dest_dir="$final_path/build-lemmy/" --source_id="lemmy"
ynh_setup_source --dest_dir="$final_path/lemmy-ui/" --source_id="lemmy-ui"
ynh_setup_source --dest_dir="$final_path/lemmy-ui/lemmy-translations/" --source_id="lemmy-translations"
ynh_setup_source --dest_dir="$final_path/iframely/" --source_id="iframely"
ynh_setup_source --dest_dir="$final_path/build-pict-rs/" --source_id="pict-rs"
ynh_setup_source --dest_dir="$final_path/build-imagemagick/" --source_id="imagemagick"

chmod 750 "$final_path"
chmod -R o-rwx "$final_path"
chown -R $app:$app "$final_path"

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

# Create a dedicated NGINX config
ynh_add_nginx_config

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

datadir=/home/yunohost.app/$app
ynh_app_setting_set --app=$app --key=datadir --value=$datadir

mkdir -p $datadir/pictrs-data

chmod 750 "$datadir"
chmod -R o-rwx "$datadir"
chown -R $app:$app "$datadir"

#=================================================
# MAKE INSTALL
#=================================================
ynh_script_progression --message="Making install..."

# Install ImageMagick
pushd "$final_path/build-imagemagick/"
	./configure
	make
	make install
	ldconfig /usr/local/lib
popd

# Install rustup with the toolchain needed by lemmy
pushd "$final_path"
	sudo -u "$app" RUSTUP_HOME="$final_path"/.rustup CARGO_HOME="$final_path"/.cargo bash -c 'curl -sSf -L https://static.rust-lang.org/rustup.sh | sh -s -- -y --default-toolchain nightly'
popd

export PATH="$PATH:$final_path/.cargo/bin:$final_path/.local/bin:/usr/local/sbin"

# Compile lemmy
pushd $final_path/build-lemmy
	ynh_exec_warn_less sudo -u "$app" env PATH="$PATH" cargo build --release
popd

# Compile pict-rs
pushd $final_path/build-pict-rs
	ynh_exec_warn_less sudo -u "$app" env PATH="$PATH" cargo build --release
popd

# Install lemmy
mkdir -p "$final_path/lemmy_server/"
cp -af "$final_path/build-lemmy/target/release/lemmy_server" "$final_path/lemmy_server/lemmy_server"

# Install pict-rs
mkdir -p "$final_path/pict-rs/"
cp -af "$final_path/build-pict-rs/target/release/pict-rs" "$final_path/pict-rs/pict-rs"

# Remove build files and rustup
ynh_secure_remove --file="$final_path/build-lemmy"
ynh_secure_remove --file="$final_path/build-pict-rs"
ynh_secure_remove --file="$final_path/build-imagemagick"
ynh_secure_remove --file="$final_path/.cargo"
ynh_secure_remove --file="$final_path/.rustup"

# Compile lemmy-ui
pushd $final_path/lemmy-ui
	ynh_exec_warn_less sudo -u "$app" env PATH="$PATH" yarn install --pure-lockfile
	ynh_exec_warn_less sudo -u "$app" env PATH="$PATH" yarn build:prod
popd

# Compile iframely
pushd $final_path/iframely
	ynh_exec_warn_less sudo -u "$app" env PATH="$PATH" $ynh_npm install
popd

chmod 750 "$final_path"
chmod -R o-rwx "$final_path"
chown -R $app:$app "$final_path"

#=================================================
# ADD A CONFIGURATION
#=================================================
ynh_script_progression --message="Adding a configuration file..."

mkdir -p "$final_path/config/"
ynh_add_config --template="../conf/lemmy.hjson" --destination="$final_path/config/config.hjson"

chmod 400 "$final_path/config/config.hjson"
chown $app:$app "$final_path/config/config.hjson"

ynh_add_config --template="../conf/iframely.config.local.js" --destination="$final_path/iframely/iframely.config.local.js"

chmod 400 "$final_path/iframely/iframely.config.local.js"
chown $app:$app "$final_path/iframely/iframely.config.local.js"

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

# Create a dedicated systemd config
ynh_add_systemd_config --service="$app" --template="lemmy.service"
ynh_add_systemd_config --service="$app-ui" --template="lemmy-ui.service"
ynh_add_systemd_config --service="$app-iframely" --template="iframely.service"
ynh_add_systemd_config --service="$app-pict-rs" --template="pict-rs.service"

#=================================================
# GENERIC FINALIZATION
#=================================================
# SETUP LOGROTATE
#=================================================
ynh_script_progression --message="Configuring log rotation..."

mkdir -p "/var/log/$app"
chmod 750 "/var/log/$app"
chmod -R o-rwx "/var/log/$app"
chown -R $app:$app "/var/log/$app"

# Use logrotate to manage application logfile(s)
ynh_use_logrotate

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

yunohost service add $app --description="A short description of the app" --log="/var/log/$app/$app.log"
yunohost service add $app-ui --description="A short description of the app" --log="/var/log/$app/$app-ui.log"
yunohost service add $app-iframely --description="A short description of the app" --log="/var/log/$app/$app-iframely.log"
yunohost service add $app-pict-rs --description="A short description of the app" --log="/var/log/$app/$app-pict-rs.log"

#=================================================
# START SYSTEMD SERVICE
#=================================================
ynh_script_progression --message="Starting a systemd service..."

# Start a systemd service
ynh_systemd_action --service_name=$app --action="start" --line_match="Started" --log_path=systemd
ynh_systemd_action --service_name=$app-ui --action="start" --line_match="Started" --log_path=systemd
ynh_systemd_action --service_name=$app-iframely --action="start" --line_match="Started" --log_path=systemd
ynh_systemd_action --service_name=$app-pict-rs --action="start" --line_match="Started" --log_path=systemd

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

# Make app public
ynh_permission_update --permission="main" --add="visitors"

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

ynh_systemd_action --service_name=nginx --action=reload

#=================================================
# SEND A README FOR THE ADMIN
#=================================================

message="Lemmy was successfully installed :)

Please open https://$domain$path_url

Your credentials for the admin panel are:
- admin username: $admin
- admin password: $password

If you facing an issue or want to improve Lemmy, please open a new issue in this project: https://github.com/YunoHost-Apps/lemmy_ynh/issues"

ynh_send_readme_to_admin "$message"


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

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