# Sends a text message to Rocket.Chat via webhook.
# Uses global $rocketChatUrl.
# $1 (text):       message text
# [$2] (attachFile): optional path to a file to attach
function rocketChatSend() {
    [[ -n "${rocketChatUrl:-}" ]] || { appError "rocketChatUrl is not configured"; return 1; }

    local text="$1"
    local attachFile="${2:-}"

    local payload
    if [[ -n "$attachFile" ]]; then
        local attachText
        if [[ -f "$attachFile" ]]; then
            attachText=$(< "$attachFile")
        else
            attachText="_(file not found)_"
        fi
        payload=$(jq -nc \
            --arg text "$text" \
            --arg title "$attachFile" \
            --arg attachText "$attachText" \
            '{"text": $text, "attachments": [{"title": $title, "text": ("```shell\n" + $attachText + "\n```"), "collapsed": true}]}')
    else
        payload=$(jq -nc --arg text "$text" '{"text": $text}')
    fi

    local error
    runError error curl -sf -X POST -H "Content-Type: application/json" --data "$payload" --retry 2 --retry-delay 1 --max-time 10 -- "$rocketChatUrl" || {
        appError "Failed to send Rocket.Chat message${error:+: $error}";
        return 1;
    }
}

# Formats a diagnostic report message for Rocket.Chat and outputs it to stdout.
# Uses globals: $hostName.
# $1 (status): report status (uppercased automatically)
# $2 (report): report text (plain multiline string)
function rocketChatFormatReport() {
    local status="${1^^}"
    local report="$2"

    local -a lines=(
        "🚨 *KUBE Alert: $status*"
        ""
        "*Source:* \`$hostName\`"
        "*Generated at:* \`$(TZ='Europe/Prague' date '+%Y-%m-%d %H:%M:%S') (Europe/Prague)\`"
        ""
        "$report"
    )

    printf '%s\n' "${lines[@]}"
}

# Sends a text message to Rocket.Chat via webhook.
# Uses global $rocketChatUrl.
# $1 (text):       message text
# [$2] (attachFile): optional path to a file to attach
function rocketChatSend2() {
    [[ -n "${rocketChatUrl:-}" ]] || { appError "rocketChatUrl is not configured"; return 1; }

    local text="$1"
    local attachFile="${2:-}"

    local payload
    if [[ -n "$attachFile" ]]; then
        local attachText
        if [[ -f "$attachFile" ]]; then
            attachText=$(< "$attachFile")
        else
            attachText="_(file not found)_"
        fi

        payload=$(jq -nc \
            --arg text "$text" \
            --arg title "$attachFile" \
            --arg attachText "$attachText" \
            '{"text": ($text + "\n\n<details>\n<summary>📄 " + $title + " (Click to expand)</summary>\n\n```shell\n" + $attachText + "\n```\n</details>")}')
    else
        payload=$(jq -nc --arg text "$text" '{"text": $text}')
    fi

    local error
    runError error curl -sf -X POST -H "Content-Type: application/json" --data "$payload" --retry 2 --retry-delay 1 --max-time 10 -- "$rocketChatUrl" || {
        appError "Failed to send Rocket.Chat message${error:+: $error}";
        return 1;
    }
}