#!/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
#=================================================

admin_pass_yuno=$YNH_APP_ARG_PASSWORD


### 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



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


#=================================================
# 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 3128)
# 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

ynh_install_app_dependencies squid3


#=================================================
# 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 "__ADMIN_PASS__" "$admin_pass_yuno" "../conf/squid.conf"
ynh_replace_string "__PORT__"       "$port"            "../conf/squid.conf"
cp -f "../conf/squid.conf" "/etc/squid3/."
#=================================================
# 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 "/etc/squid3/squid.conf"


#=================================================
# 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 squid3 --log "/var/log/squid/access.log"


#=================================================
# RESTART SQUID'S SERVICE
#=================================================

service squid3 restart


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

message="You can find a config file at /etc/squid3/squid.conf
Squid 3 will work with your registered users. Just put the username and password when asked.

To configure on Firefox go to preferences->general->network proxy->manual proxy configuration.

Enter these value in the below feilds.

Http proxy: your any registered domain name or ip

port: $port

Tick mark use this proxy server for all protocols

No proxy for: localhost, 127.0.0.1

Save and restart borwser.

If you facing an issue or want to improve this app, please open a new issue in this project: https://github.com/YunoHost-Apps/squid3_ynh/issues"

ynh_send_readme_to_admin --app_message="$message" --recipients="root"