#!/bin/bash

#'
#This Bash script takes a json array of form [{"room_id": "!asdX:domain.com", "room_name": "nameX"}, {"room_id": "!asdY:domain.com", "room_name": "nameY"}] and iterates over them with the delete room api which is exclusive to Synapse.
#This array is supplied as a file parameter and created with another script (see filter_account_data_rooms_for_pattern.sh)
#
#See: https://matrix-org.github.io/synapse/latest/admin_api/rooms.html#delete-room-api
#
#'


set -e

domain=$1
login_file=$2
input_file=$3
output_folder=$4

if [ -z "$domain" -o ! -e "$input_file" -o ! -e "$login_file" ]; then
    echo "Domain: $domain, login file: $login_file, input file: $input_file, output folder: $output_folder"
    echo "Usage: $0 http(s)://<DOMAIN> <LOGIN_FILE> <INPUT_FILE> [OUTPUT_FOLDER]"
    exit 1
fi
if [ ! -z "$output_folder" -a ! -d "$output_folder" ]; then
    echo "The given output folder ($output_folder) is not a valid directory! Creating it ..."
    mkdir $output_folder
fi

#echo "Querying homeserver for new login data ..."
#echo curl -XPOST -d "{\"type\":\"m.login.password\", \"user\":\"$user\", \"password\":\"$password\"}" "$domain/_matrix/client/r0/login" -o "$output_file"
#curl --globoff -XGET -H "Authorization: Bearer $token" "$domain/_matrix/client/r0/sync?filter={\"room\":{\"timeline\":{\"limit\":1}}}"

ROOM_COUNT=$(jq '. | length' "$input_file")
echo "Found $ROOM_COUNT rooms to delete in the input file. Example: "
echo $(jq '.[0]' "$input_file")
echo
echo "Other Example: "
echo $(jq '.[-1]' "$input_file")
echo

read -p "Is this looking correct? (y/n) " reply
if [ "$reply" != "y" -a "$reply" != "Y" ]; then
    echo "Aborting ..."
    exit 0
fi

token=$(jq -r '.access_token' "$login_file")


for ((i = 0; i < $ROOM_COUNT; i++ ));do
    room_json=$(jq ".[$i]" "$input_file")
    room_name=$(echo $room_json | jq -r '.room_name')
    room_id=$(echo $room_json | jq -r '.room_id')
    room_id_enc=$(echo $room_json | jq -r '.room_id' | sed 's/!/%21/g' | sed 's/:/%3A/g')  # room id has to be URL encoded (bootleg version)
    echo "Currently purging room $room_name with ID: $room_id ..."

    if [ -d "$output_folder" ]; then
        output_file="$output_folder/$room_id_enc-delete_result.txt"
    fi

    if [ ! -z "$output_file" ]; then
        echo curl --globoff -XDELETE -H "Authorization: Bearer $token" -d "{\"block\": false, \"purge\": true}" "$domain/_synapse/admin/v2/rooms/$room_id_enc" -o "$output_file"
        curl --globoff -XDELETE -H "Authorization: Bearer $token" -d "{\"block\": false, \"purge\": true}" "$domain/_synapse/admin/v2/rooms/$room_id_enc" -o "$output_file"
    else
        echo curl --globoff -XDELETE -H "Authorization: Bearer $token" -d "{\"block\": false, \"purge\": true}" "$domain/_synapse/admin/v2/rooms/$room_id_enc"
        curl --globoff -XDELETE -H "Authorization: Bearer $token" -d "{\"block\": false, \"purge\": true}" "$domain/_synapse/admin/v2/rooms/$room_id_enc"
    fi
    
    echo "Sleeping for 5 seconds ..."
    sleep 5
    
done