#!/usr/bin/env bash

# Build and optionally configure a Docker sandbox interactively.

set -o errexit
set -o nounset
set -o pipefail

readonly KIT_PATH="$HOME/.sbx/kits/hypoport.ai"
readonly TEMPLATE='127.0.0.1:62735/finmas.de/mux033/opencode-ops:latest'

require_command() {
    local command_name="$1"
    local message="$2"

    if ! command -v "$command_name" >/dev/null 2>&1; then
        printf '%s\n' "$message" >&2
        exit 1
    fi
}

ask_yes_no() {
    local prompt="$1"
    local answer

    while true; do
        read -r -p "$prompt [y/n] " answer || exit 0
        case "$answer" in
            [Yy]) return 0 ;;
            [Nn]) return 1 ;;
            *) printf 'Please answer yes or no.\n' ;;
        esac
    done
}

prompt_component() {
    local result_var="$1"
    local label="$2"
    shift 2
    local options=("$@" custom)
    local choice custom_value

    while true; do
        printf '%s:\n' "$label"
        select choice in "${options[@]}"; do
            case "$choice" in
                custom)
                    read -r -p "Custom $label: " custom_value || exit 0
                    if [[ -n "$custom_value" ]]; then
                        printf -v "$result_var" '%s' "$custom_value"
                        return 0
                    fi
                    printf 'The custom value cannot be empty.\n'
                    ;;
                '') printf 'Please select one of the listed options.\n' ;;
                *)
                    printf -v "$result_var" '%s' "$choice"
                    return 0
                    ;;
            esac
        done
    done
}

main() {
    require_command sbx 'We cannot build a Docker sbx image because sbx does not seem to be installed.'
    require_command jq 'We cannot list existing Docker sbx sandboxes because jq does not seem to be installed.'

    local build_from_scratch
    if ask_yes_no 'Build from scratch?'; then
        build_from_scratch=true
    else
        build_from_scratch=false
    fi

    local sandbox_json
    if ! sandbox_json=$(sbx ls --json); then
        printf 'Unable to retrieve the existing Docker sbx sandboxes.\n' >&2
        exit 1
    fi

    if ! jq -s -e 'length == 1 and (.[0].sandboxes | type == "array")' \
        <<< "$sandbox_json" >/dev/null; then
        printf 'The output from sbx ls --json was not the expected JSON format.\n' >&2
        exit 1
    fi

    local -a sandbox_names
    mapfile -t sandbox_names < <(jq -r '.sandboxes[].name' <<< "$sandbox_json")
}

main "$@"