#!/bin/bash

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

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

ynh_abort_if_errors

#=================================================
# RETRIEVE ARGUMENTS
#=================================================

final_path=$(ynh_app_setting_get --app=$app --key=final_path)

#=================================================
# SPECIFIC GETTERS FOR TOML SHORT KEY
#=================================================

function get__listuser {
  existingUsers=$(grep -- "\".*: user" "$final_path/config.yaml" | sed -r 's/: user//' | tr -d '[:blank:]' | sed '/^#/d' | tr -d '\"' | tr '\n' ',')

  cat <<EOF
value: '$existingUsers'
EOF
}

function get__listrelay {
  existingRelayUsers=$(grep -- "\".*: relay" "$final_path/config.yaml" | sed -r 's/: relay//' | tr -d '[:blank:]' | sed '/^#/d' | tr -d '\"' | tr '\n' ',')

  cat <<EOF
value: '$existingRelayUsers'
EOF
}

function get__listadmin {
  existingAdmins=$(grep -- "\".*: admin" "$final_path/config.yaml" | sed -r 's/: admin//' | tr -d '[:blank:]' | sed '/^#/d' | tr -d '\"' | tr '\n' ',')

  cat <<EOF
value: '$existingAdmins'
EOF
}

function get__role {
  cat <<EOF
choices: ["admin", "user", "relay"]
default: "user"
EOF
}

#=================================================
# SPECIFIC SETTERS FOR TOML SHORT KEYS
#=================================================

function set__role {
    set -o noglob # Disable globbing to avoid expansions when passing * as value.
    declare values="list$role"
    newValues="${!values}" # Here we expand the dynamic variable we created in the previous line. ! Does the trick
    usersArray=(${newValues//,/ }) # Split the values using comma (,) as separator.

    if [ -n "$newValues" ]
    then
        ynh_systemd_action --service_name="$app" --action=stop
        # Get all entries between "permissions:" and "relay:" keys, remove the role part, remove commented parts, format it with newlines and clean whitespaces and double quotes.
        allDefinedEntries=$(awk '/permissions:/{flag=1; next} /relay:/{flag=0} flag' "$final_path/config.yaml" | sed "/: $role/d" | sed -r 's/: (admin|user|relay)//' | tr -d '[:blank:]' | sed '/^#/d' | tr -d '\"' | tr ',' '\n' )
        # Delete everything from the corresponding role to insert the new defined values. This way we also handle deletion of users.
        sed -i "/permissions:/,/relay:/{/: $role/d;}" "$final_path/config.yaml"
      	for user in "${usersArray[@]}"
            do
              if grep -q -x "${user}" <<< "$allDefinedEntries"
              then
                ynh_print_info "User $user already defined in another role."
              else
                sed -i "/permissions:/a \        \\\"$user\": $role" "$final_path/config.yaml" # Whitespaces are needed so that the file can be correctly parsed
              fi
        done
    fi
    set +o noglob

    ynh_print_info "Users with role $role added in $final_path/config.yaml"
}

#=================================================
# GENERIC FINALIZATION
#=================================================

ynh_app_config_run $1