#!/bin/bash

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

source _common.sh
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.
	true
}
# Exit if an error occurs during the execution of the script
ynh_abort_if_errors

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

domain=$YNH_APP_ARG_DOMAIN
path_url=$YNH_APP_ARG_PATH
admin=$YNH_APP_ARG_ADMIN

### 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
#=================================================
### About --weight and --time
### ynh_script_progression will show to your final users the progression of each scripts.
### In order to do that, --weight will represent the relative time of execution compared to the other steps in the script.
### --time is a packager option, it will show you the execution time since the previous call.
### This option should be removed before releasing your app.
### Use the execution time, given by --time, to estimate the weight of a step.
### A common way to do it is to set a weight equal to the execution time in second +1.
### The execution time is given for the duration since the previous call. So the weight should be applied to this previous call.
ynh_script_progression --message="Validating installation parameters..." --time --weight=1

### 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 --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..." --time --weight=1

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

#=================================================
# INSTALL DEPENDENCIES
#=================================================
ynh_script_progression --message="Installing dependencies..." --time --weight=1

### `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
###		- Remove the variable "pkg_dependencies" in _common.sh
###		- As well as the section "REINSTALL DEPENDENCIES" in the restore script
###		- And the section "UPGRADE DEPENDENCIES" in the upgrade script

ynh_install_app_dependencies $pkg_dependencies

#=================================================
# CREATE A MYSQL DATABASE
#=================================================
ynh_script_progression --message="Creating a MySQL database..." --time --weight=1

### Use these lines if you need a database for the application.
### `ynh_mysql_setup_db` will create a database, an associated user and a ramdom password.
### The password will be stored as 'mysqlpwd' into the app settings,
### and will be available as $db_pwd
### If you're not using these lines:
###		- Remove the section "BACKUP THE MYSQL DATABASE" in the backup script
###		- Remove also the section "REMOVE THE MYSQL DATABASE" in the remove script
###		- As well as the section "RESTORE THE MYSQL DATABASE" in the restore script

db_name=$(ynh_sanitize_dbid --db_name=$app)
db_user=$db_name
ynh_app_setting_set --app=$app --key=db_name --value=$db_name
ynh_mysql_setup_db --db_user=$db_user --db_name=$db_name

#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================
ynh_script_progression --message="Setting up source files..." --time --weight=1

### `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=$app --key=final_path --value=$final_path
# Download, check integrity, uncompress and patch the source from app.src
ynh_setup_source --dest_dir="$final_path"

#=================================================
# NGINX CONFIGURATION
#=================================================
ynh_script_progression --message="Configuring nginx web server..." --time --weight=1

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

# Create a dedicated nginx config
if [ "$path_url" != "/" ]; then
	ynh_replace_string --match_string="__PATHTOCHANGE__" --replace_string="$path_url" --target_file="../conf/nginx.conf"
else
	ynh_replace_string --match_string="__PATHTOCHANGE__"  --replace_string=" "         --target_file="../conf/nginx.conf"
fi
ynh_add_nginx_config

#=================================================
# CREATE DEDICATED USER
#=================================================
ynh_script_progression --message="Configuring system user..." --time --weight=1

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

#=================================================
# PHP-FPM CONFIGURATION
#=================================================
ynh_script_progression --message="Configuring php-fpm..." --time --weight=1

### `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
### 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

# copy index file 
sudo cp ../conf/index.php $final_path/

#=================================================
# MODIFY A CONFIG FILE
#=================================================
### `ynh_replace_string` is used to replace a string in a file.
### (It's compatible with sed regular expressions syntax)
sudo cp ../conf/config.php $final_path/user/config.php
ynh_replace_string --match_string="yunouser" --replace_string="$db_name" --target_file="$final_path/user/config.php"
ynh_replace_string --match_string="yunopass" --replace_string="$db_pwd" --target_file="$final_path/user/config.php"
ynh_replace_string --match_string="yunobase" --replace_string="$db_name" --target_file="$final_path/user/config.php"
ynh_replace_string --match_string="yunodomain" --replace_string="$domain" --target_file="$final_path/user/config.php"
ynh_replace_string --match_string="_yourlspath" --replace_string="${path_url%/}" --target_file="$final_path/user/config.php"
ynh_replace_string --match_string="modify this text with something random" --replace_string="$(ynh_string_random 24)$(ynh_string_random 24)" --target_file="$final_path/user/config.php"

# The script "add_sso_conf.py" will just add en entry for the path "/admin" in the sso conf.json.persistent file in the cathegory "protected_urls".
cp ../conf/add_sso_conf.py    $final_path/add_sso_conf.py
cp ../conf/remove_sso_conf.py $final_path/remove_sso_conf.py
ynh_replace_string --match_string="__DOMAIN__" --replace_string="$domain"   --target_file="$final_path/add_sso_conf.py"
if [ "$path_url" != "/" ]; then
	ynh_replace_string --match_string="__PATH__"   --replace_string="$path_url" --target_file="$final_path/add_sso_conf.py"
    ynh_replace_string --match_string="__PATH__"   --replace_string="$path_url" --target_file="$final_path/remove_sso_conf.py"
else
	ynh_replace_string --match_string="__PATH__"   --replace_string="" --target_file="$final_path/add_sso_conf.py"
    ynh_replace_string --match_string="__PATH__"   --replace_string="" --target_file="$final_path/remove_sso_conf.py"
fi
ynh_replace_string --match_string="__DOMAIN__" --replace_string="$domain"   --target_file="$final_path/remove_sso_conf.py"


python3 $final_path/add_sso_conf.py || ynh_die "Your file /etc/ssowat/conf.json.persistent don't respect the json synaxe. Please fix the synaxe to install this app. For more information see here : https://github.com/YunoHost-Apps/yourls_ynh"


# Set permissions
chown -R $app: $final_path

# Reload Nginx and regenerate SSOwat conf

# unprotected_uris allows SSO credentials to be passed anyway.
ynh_app_setting_set --app=$app --key=unprotected_uris --value="/"

# Restrict access to admin only
yunohost app addaccess --users=$admin $app
yunohost app ssowatconf

#=================================================
# RELOAD NGINX
#=================================================
ynh_script_progression --message="Reloading nginx web server..." --time --weight=1

ynh_systemd_action --service_name=nginx --action=reload
sleep 10

# Start Yourls install (database table creation)
ynh_local_curl "admin/install.php" "install=dummy" 
sleep 10

# Calculate and store the config file checksum into the app settings
ynh_store_file_checksum "$final_path/user/config.php"

#=================================================
# SETUP SSOWAT
#=================================================
ynh_systemd_action --service_name=nginx --action=reload
yunohost app ssowatconf

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

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