#!/bin/bash
# In simple cases, you don't need a config script. 

# With a simple config_panel.toml, you can write in the app settings, in the 
# upstream config file or replace complete files (logo ...) and restart services.

# The config scripts allows you to go further, to handle specific cases 
# (validation of several interdependent fields, specific getter/setter for a value,
# display dynamic informations or choices, pre-loading of config type .cube... ).

#=================================================
# GENERIC STARTING
#=================================================
# IMPORT GENERIC HELPERS
#=================================================

source /usr/share/yunohost/helpers

ynh_abort_if_errors

data_dir=$(ynh_app_setting_get --app=$app --key=data_dir)
install_dir=$(ynh_app_setting_get --app=$app --key=install_dir)

#=================================================
# SPECIFIC GETTERS FOR TOML SHORT KEY
#=================================================
get__readonly_dir() {
    local directories=$(ynh_app_setting_get $app directories)
    if [[ "$directories" == "" ]]
    then
        echo "choices: []"
    else
        echo "choices:"
        for directory in $(echo $directories | sed "s/,/ /g")
        do
            echo "  $directory: $directory"
        done
    fi
}

get__unbrowseable() {
    get__readonly_dir
}

#=================================================
# SPECIFIC VALIDATORS FOR TOML SHORT KEYS
#=================================================

#=================================================
# SPECIFIC SETTERS FOR TOML SHORT KEYS
#=================================================
set__directories() {

    mkdir -p $install_dir/smb.conf.d

    #---------------------------------------------
    # IMPORTANT: setter are trigger only if a change is detected
    #---------------------------------------------
    for directory in $(echo $directories | sed "s/,/ /g"); do

        # Create yunohost permission
        if ! ynh_permission_exists --permission=$directory ; then 
            ynh_permission_create --permission="$directory" --allowed=all_users --show_tile=false
        fi
        
        # Create the directory
        mkdir -p $data_dir/$directory

        chmod 750 "$data_dir/$directory"
        chmod -R o-rwx "$data_dir/$directory"
        chown -R root:root "$data_dir/$directory"
        setfacl -R -m g:samba.$directory:rwx,d:g:samba.$directory:rwx $data_dir/$directory


        # Add the configuration in /etc/samba/smb.conf if needed
        cat > $install_dir/smb.conf.d/$directory.conf <<END
[$directory]
   comment = $directory
   read only = no
   path = $data_dir/$directory
   guest ok = no
   browsable = yes
   valid users = @samba.$directory
   create mask = 0660
   directory mask = 770
   vfs objects = dfs_samba4 acl_xattr recycle
   recycle:repository = .recycle
   recycle:keeptree = yes
   recycle:versions = yes
END

    done

    # Remove configuration for unlisted directories
    pushd $install_dir/smb.conf.d
    for $directory in $(ls !(0-global).conf)
    do
        if ! [[ "${directory%.conf}" =~ $(echo "^($(echo $directories | sed s/ /|/g))$") ]]; then
            ynh_secure_remove "$install_dir/smb.conf.d/"
        fi
    done
    popd

    cat > $install_dir/smb.conf <<EOF
# ================================================= 
# DO NOT EDIT THIS FILE
# EDIT SUBPARTS IN /etc/samba/smb.conf.d
# =================================================

EOF
    cat $install_dir/smb.conf.d/*.conf >> $install_dir/smb.conf
    
#---------------------------------------------
# IMPORTANT: to be able to upgrade properly, you have to saved the value in settings too
#---------------------------------------------
    ynh_app_setting_set $app directories $directories
}

set__readonly_dir() {
    local value
    for directory in $directories; do
        value="no"
        if [[ $directory =~ $(echo "^($(echo $readonly_dir | sed s/ /|/g))$") ]]; then
            value="yes"
        fi
        ynh_write_var_in_file --file=$install_dir/smb.conf.d/$directory.conf --key="read only" --value="$value"
    done
    ynh_app_setting_set $app readonly_dir $readonly_dir
}

set__unbrowseable() {
    local value
    for directory in $directories; do
        value="yes"
        if [[ $directory =~ $(echo "^($(echo $unbrowseable | sed s/ /|/g))$") ]]; then
            value="no"
        fi
        ynh_write_var_in_file --file=$install_dir/smb.conf.d/$directory.conf --key="browsable" --value="$value"
    done
    ynh_app_setting_set $app unbrowseable $unbrowseable

}
#=================================================
# GENERIC FINALIZATION
#=================================================
ynh_app_config_run $1