#!/bin/bash

# Variables
ROCKET_CHAT_URL="https://chat.koozali.org"  # Replace with your Rocket.Chat URL
TOKEN="LwSxku5012GVjT5GKukvCiAE3jmxzNREsJ3ZO87oP1D"  # Replace with your user token
USER_ID="9RmjfwmQZc9pYrC9G"

# Function to get a list of channels
get_channel_list() {
    curl -s -X GET "$ROCKET_CHAT_URL/api/v1/channels.list" \
    -H "X-Auth-Token: $TOKEN" \
    -H "X-User-Id: $USER_ID" \
    -H "Content-Type: application/json"
}

# Function to get members in a given room
get_members_in_channel() {
    local channel_id=$1
    curl -s -X GET "$ROCKET_CHAT_URL/api/v1/channels.members?roomId=$channel_id" \
    -H "X-Auth-Token: $TOKEN" \
    -H "X-User-Id: $USER_ID" \
    -H "Content-Type: application/json"
}

# Main Logic
channels=$(get_channel_list)

# Check if the channel list request was successful
if echo "$channels" | jq -e . >/dev/null; then
    # Create an array to store channel information
    mapfile -t channel_array < <(echo "$channels" | jq -c '.channels[] | {id: ._id, name: .fname}')

    # Print header
    echo -e "Channel Name \t\t\t Members"
    echo -e "--------------\t\t\t-----------------------------"

    # Iterate over each channel from the array
    for channel in "${channel_array[@]}"; do
        channel_id=$(echo "$channel" | jq -r '.id')
        channel_name=$(echo "$channel" | jq -r '.name')

        # Check if channel_id and channel_name were extracted correctly
        if [[ -z "$channel_id" || -z "$channel_name" ]]; then
            echo "Warning: Channel ID or Name is empty. Channel data: $channel"
            continue
        fi

        #echo "Fetching members for channel: $channel_name (ID: $channel_id)"  # Debugging line

        # Get members for this channel
        members_response=$(get_members_in_channel "$channel_id")
        
        # Output the raw response for debugging
        #echo "Members Response: $members_response"

        # Check if the members response is valid
        if echo "$members_response" | jq -e . >/dev/null; then
            member_ids=$(echo "$members_response" | jq -r '.members[].username // empty') # Capture usernames

            # Create a members list
            member_list=$(echo "$member_ids" | tr '\n' ', ' | sed 's/, $//') # Join members with a comma
            echo -e "$channel_name \t\t\t $member_list"
        else
            echo "$channel_name | Unable to fetch members or no members found"
        fi
    done
else
    echo "Failed to retrieve channels or invalid response."
    echo "$channels"  # Print the actual response for debugging
fi

echo "Done."