#!/bin/bash

# Instance Commands Handler
# Multi-instance lifecycle for multi-instance-capable apps. Mutating verbs route
# through the task system (mirroring `app install`): the WebUI queues a task, the
# processor re-invokes the CLI with LIBREPORTAL_TASK_EXEC=1, and only then does
# the real work run. No new mutating backend API endpoint is introduced.

cliHandleInstanceCommands()
{
    local action="$initial_command2"

    # --local/--lan is pulled out of the positional list rather than given a fixed
    # slot, so it can be written anywhere after the verb — `instance create
    # bookstack home --local` reads naturally and still leaves domain#/subdomain
    # in their documented positions for callers that pass them.
    local local_only="false"
    local -a _pos=()
    local _a
    for _a in "$initial_command3" "$initial_command4" "$initial_command5" \
              "$initial_command6" "$initial_command7"; do
        case "$_a" in
            "--local"|"--lan") local_only="true" ;;
            *) _pos+=("$_a") ;;
        esac
    done

    local type="${_pos[0]}"
    local name="${_pos[1]}"
    local domain_idx="${_pos[2]}"
    local subdomain="${_pos[3]}"

    case "$action" in
        "create")
            if [[ -z "$type" || -z "$name" ]]; then
                isNotice "Usage: libreportal instance create <type> <name> [domain_index] [subdomain] [--local]"
                cliShowInstanceHelp
                return 1
            fi
            if [[ "$LIBREPORTAL_TASK_EXEC" == "1" ]]; then
                instanceCreate "$type" "$name" "$domain_idx" "$subdomain" "$local_only"
            else
                local _cmd="libreportal instance create $type $name"
                [[ -n "$domain_idx" ]] && _cmd+=" $domain_idx"
                [[ -n "$subdomain" ]]  && _cmd+=" $subdomain"
                # Re-invocation must carry the flag or the task-side run would
                # silently build a Traefik-routed instance instead.
                [[ "$local_only" == "true" ]] && _cmd+=" --local"
                cliTaskRun "$_cmd" "install" "${type}_$(instanceIdPart "$name")"
            fi
            ;;

        "remove"|"delete")
            # Here $type holds the instance slug (positional reuse).
            local slug="$type"
            if [[ -z "$slug" ]]; then
                isNotice "Usage: libreportal instance remove <slug>"
                return 1
            fi
            if [[ "$LIBREPORTAL_TASK_EXEC" == "1" ]]; then
                instanceRemove "$slug"
            else
                cliTaskRun "libreportal instance remove $slug" "uninstall" "$slug"
            fi
            ;;

        "list")
            instanceList "$type"   # $type optional = filter by app type
            ;;

        "repair")
            # Rewrites files in the instance's TEMPLATE dir only — no container is
            # touched, nothing is reinstalled — so it does not go through the task
            # system the way create/remove do. $type holds the optional slug
            # (positional reuse), $name an optional --dry-run.
            instanceRepair "$type" "$name"
            ;;

        *)
            cliShowInstanceHelp
            ;;
    esac
}