#!/bin/bash

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

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

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

# 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_normalize_url_path $YNH_APP_ARG_PATH)
admin=$YNH_APP_ARG_ADMIN
admin_password=$YNH_APP_ARG_PASSWORD
is_public=$YNH_APP_ARG_IS_PUBLIC
language=$YNH_APP_ARG_LANGUAGE
wiki_name=$YNH_APP_ARG_WIKI_NAME

app=$YNH_APP_INSTANCE_NAME

#=================================================
# CHECK IF THE APP CAN BE INSTALLED WITH THESE ARGS
#=================================================
ynh_script_progression --message="Validating installation parameters..." --weight=1

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

#=================================================
# GENERATE LDAP USER SETTINGS
#=================================================
ynh_script_progression --message="Generating dedicated LDAP user credentials..." --weight=1

ldap_user="${app}_ldap"
ldap_password=$(ynh_string_random --length=8)

#=================================================
# STORE SETTINGS FROM MANIFEST
#=================================================
ynh_script_progression --message="Storing installation settings..." --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
ynh_app_setting_set --app=$app --key=admin_password --value=$admin_password
ynh_app_setting_set --app=$app --key=is_public --value=$is_public
ynh_app_setting_set --app=$app --key=language --value=$language
ynh_app_setting_set --app=$app --key=wiki_name --value=$wiki_name
ynh_app_setting_set --app=$app --key=ldap_user --value=$ldap_user
ynh_app_setting_set --app=$app --key=ldap_password --value=$ldap_password

#=================================================
# STANDARD MODIFICATIONS
#=================================================
# INSTALL DEPENDENCIES
#=================================================
ynh_script_progression --message="Installing dependencies..." --weight=15

ynh_install_app_dependencies $pkg_dependencies

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

db_name=$(ynh_sanitize_dbid --db_name=$app)
db_user=$db_name
ynh_app_setting_set --app=$app --key=db_name --value=$db_name
ynh_app_setting_set --app=$app --key=db_user --value=$db_user
ynh_mysql_setup_db --db_user=$db_user --db_name=$db_name
# creates the variable db_pwd

#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================
ynh_script_progression --message="Setting up source files..." --weight=4

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="$final_path"
ynh_setup_source --dest_dir="$final_path/extensions/" --source_id="ldap_authentication2"
ynh_setup_source --dest_dir="$final_path/extensions/" --source_id="ldap_provider"
ynh_setup_source --dest_dir="$final_path/extensions/" --source_id="pluggable_auth"

# Note(decentral1se): Disabled and unused for now ...
# ynh_setup_source --dest_dir="$final_path/extensions/" --source_id="ldap_groups"
# ynh_setup_source --dest_dir="$final_path/extensions/" --source_id="ldap_userinfo"
# ynh_setup_source --dest_dir="$final_path/extensions/" --source_id="ldap_authorization"

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

# Create a dedicated nginx config
ynh_add_nginx_config

#=================================================
# CREATE DEDICATED USER
#=================================================
ynh_script_progression --message="Configuring system user..." --weight=2

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

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

# Create a dedicated php-fpm config
ynh_add_fpm_config

#=================================================
# SPECIFIC SETUP
#=================================================
# CREATE DEDICATED LDAP USER
#=================================================
ynh_script_progression --message="Creating dedicated LDAP user..." --weight=1

yunohost user create $ldap_user --firstname "MediaWikiLdap" --lastname "MediaWikiLdap" --mail ${ldap_user}@$domain --password $ldap_password -q 0

#=================================================
# RUN INSTALLATION OF MEDIAWIKI
#=================================================
ynh_script_progression --message="Installing and configuring Mediawiki..." --weight=14
if [ "$path_url" = "/" ]; then
  scriptpath=""
else
  scriptpath=$path_url
fi

php $final_path/maintenance/install.php --conf $final_path \
  --server "https://$domain" \
  --scriptpath "$scriptpath" \
  --dbuser $db_name \
  --dbpass $db_pwd \
  --dbname $db_name \
  --dbprefix "mdk_" \
  --lang $language \
  --pass $admin_password \
  "$wiki_name" "$admin"

#=================================================
# REPLACE CONFIGURATION SETTINGS
#=================================================
cp ../conf/LocalSettings.php $final_path/LocalSettings.php

ynh_replace_string --target_file="$final_path/LocalSettings.php" --match_string="__WIKI_NAME__" --replace_string="$wiki_name"
ynh_replace_string --target_file="$final_path/LocalSettings.php" --match_string="__ADMIN__"     --replace_string="$admin"

if [ $path_url = "/" ]; then
    # MediaWiki expects a "" for the root URL which is typically assumed to be
    # "/" by other application packages. Therefore, we assume end-users will do
    # this as well and make sure to ensure an "" in all cases where "/" is
    # specified
    ynh_replace_string --target_file="$final_path/LocalSettings.php" --match_string="__PATH__"  --replace_string=""
else
    ynh_replace_string --target_file="$final_path/LocalSettings.php" --match_string="__PATH__"  --replace_string="$path_url"
fi

ynh_replace_string --target_file="$final_path/LocalSettings.php" --match_string="__DOMAIN__"    --replace_string="$domain"
ynh_replace_string --target_file="$final_path/LocalSettings.php" --match_string="__DB_NAME__"   --replace_string="$db_name"
ynh_replace_string --target_file="$final_path/LocalSettings.php" --match_string="__DB_USER__"   --replace_string="$db_name"
ynh_replace_string --target_file="$final_path/LocalSettings.php" --match_string="__DB_PWD__"    --replace_string="$db_pwd"
ynh_replace_string --target_file="$final_path/LocalSettings.php" --match_string="__LANGUAGE__"  --replace_string="$language"

secret=$(ynh_string_random 64)
ynh_app_setting_set $app secret $secret
ynh_replace_string --target_file="$final_path/LocalSettings.php" --match_string="__SECRET__"    --replace_string="$secret"

ynh_replace_string --target_file="$final_path/LocalSettings.php" --match_string="__LDAP_USER__" --replace_string="$ldap_user"
ynh_replace_string --target_file="$final_path/LocalSettings.php" --match_string="__LDAP_PASSWORD__" --replace_string="$ldap_password"

php $final_path/maintenance/update.php

chown -R $app:$app $final_path

#=================================================
# SETUP SSOWAT
#=================================================
ynh_script_progression --message="Configuring SSOwat..." --weight=1

# Make app public if necessary
if [ $is_public -eq 1 ]; then
  ynh_permission_update --permission "main" --add "visitors"
fi

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

ynh_systemd_action --service_name=nginx --action=reload

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

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