#!/bin/bash
# propfind-p12 - WebDAV PROPFIND with p12 client certificate auth
#
# Usage:
#   propfind-p12 [-t token] <hostname> <code_version> <p12_password>
#   propfind-p12 -h
#
# Options:
#   -t, --token   Bearer token for authorization (or set SFCC_TOKEN env var)
#   -h, --help    Show help message

_propfind_p12() (
    local SCRIPT_NAME; SCRIPT_NAME="$(basename "${BASH_SOURCE[0]}")"
    case "${BASH_SOURCE[0]}" in /dev/*|/proc/*) SCRIPT_NAME="" ;; esac
    case "$SCRIPT_NAME" in ""|bash|sh|zsh|dash) SCRIPT_NAME="propfind-p12" ;; esac

    _error() { echo "[ERR][$SCRIPT_NAME] $*" >&2; }

    _show_help() {
        local s; [ -t 1 ] && s=$'\033[4m'
        local r; [ -t 1 ] && r=$'\033[24m'
        echo "NAME"
        echo "  $SCRIPT_NAME - WebDAV PROPFIND with p12 client certificate auth"
        echo "SYNOPSIS"
        echo "  $SCRIPT_NAME [-t ${s}token${r}] ${s}hostname${r} ${s}code_version${r} ${s}p12_password${r}"
        echo "  $SCRIPT_NAME -h"
        echo "DESCRIPTION"
        echo "  Sends a WebDAV PROPFIND request (Depth: 1) to a Salesforce B2C Commerce"
        echo "  (Demandware) instance to list cartridges at the given ${s}code_version${r}."
        echo "  Authenticates with a Bearer token and a .p12 client certificate."
        echo "OPTIONS"
        echo "  ${s}hostname${r}       Instance hostname (e.g. dev01-web-example.demandware.net)"
        echo "  ${s}code_version${r}   Code version path segment (e.g. version1)"
        echo "  ${s}p12_password${r}   Password for the .p12 certificate"
        echo "  -t, --token ${s}t${r}  Bearer token for authorization (or set SFCC_TOKEN env var)"
        echo "  -h, --help     Show this help message"
        echo "ENVIRONMENT"
        echo "  SFCC_TOKEN  Fallback source for the Bearer token if -t/--token is not given"
        echo "PRECONDITIONS"
        echo "  Two certificate files must exist in the current directory:"
        echo "    \$USER-${s}hostname${r}.p12   Client certificate (use 'generate-p12' to create)"
        echo "    ${s}hostname${r}_01.crt       CA certificate (from SFCC Account Manager)"
        echo "EXIT STATUS"
        echo "  0   PROPFIND succeeded"
        echo "  2   Usage / argument error"
        echo "  4   Required .p12 or CA cert file not found"
        echo "  *   curl exit code (e.g. 58 = .p12 problem, 35 = TLS handshake)"
        echo "DEPENDENCIES"
        echo "  curl"
        echo "SEE ALSO"
        echo "  generate-p12, verify-p12"
    }

    _expand_short_opts() {
        # $1 = string of short-opt letters that take a value (e.g. "nXHd"); "" for flag-only scripts
        # $2..$N = "$@"
        # Populates _EXPANDED; caller does: set -- "${_EXPANDED[@]}"; unset _EXPANDED
        local value_opts="$1"; shift
        _EXPANDED=()
        local passthru=""
        local arg
        local rest
        local c
        for arg in "$@"; do
            if [ -n "$passthru" ]; then _EXPANDED+=("$arg"); continue; fi
            case "$arg" in
                --)          passthru=1; _EXPANDED+=("$arg") ;;
                --*|-|"")    _EXPANDED+=("$arg") ;;
                -[a-zA-Z]?*)
                    rest="${arg#-}"
                    while [ -n "$rest" ]; do
                        c="${rest%"${rest#?}"}"; rest="${rest#?}"
                        _EXPANDED+=("-$c")
                        case "$value_opts" in *"$c"*)
                            [ -n "$rest" ] && _EXPANDED+=("$rest")
                            rest="" ;;
                        esac
                    done ;;
                *)        _EXPANDED+=("$arg") ;;
            esac
        done
    }

    local token=""
    local positional=()

    _expand_short_opts "t" "$@"
    set -- "${_EXPANDED[@]}"; unset _EXPANDED

    while [ $# -gt 0 ]; do
        case "$1" in
            -h|--help)
                _show_help
                return 0
                ;;
            -t|--token)
                shift
                if [ $# -eq 0 ] || [ -z "$1" ]; then
                    _error "-t/--token requires a value. Run \`$SCRIPT_NAME -h\` for usage"
                    return 2
                fi
                token="$1"
                shift
                ;;
            --token=*)
                token="${1#*=}"
                [ -n "$token" ] || { _error "-t/--token requires a value. Run \`$SCRIPT_NAME -h\` for usage"; return 2; }
                shift
                ;;
            *)
                positional+=("$1")
                shift
                ;;
        esac
    done

    local hostname="${positional[0]-}"
    local code_version="${positional[1]-}"
    local p12_password="${positional[2]-}"

    if [ -z "$hostname" ]; then
        _error "hostname is required. Run \`$SCRIPT_NAME -h\` for usage"
        return 2
    fi
    if [ -z "$code_version" ]; then
        _error "code_version is required. Run \`$SCRIPT_NAME -h\` for usage"
        return 2
    fi
    if [ -z "$p12_password" ]; then
        _error "p12_password is required. Run \`$SCRIPT_NAME -h\` for usage"
        return 2
    fi

    # Token resolution: -t/--token flag first, then $SFCC_TOKEN env fallback
    if [ -z "$token" ]; then
        token="${SFCC_TOKEN-}"
    fi
    if [ -z "$token" ]; then
        _error "token is required (use -t/--token or set SFCC_TOKEN). Run \`$SCRIPT_NAME -h\` for usage"
        return 2
    fi

    local p12="$USER-$hostname.p12"
    local cacert="${hostname}_01.crt"

    if [ ! -f "$p12" ]; then
        _error "p12 file not found: $p12. Use 'generate-p12' to create one"
        return 4
    fi
    if [ ! -f "$cacert" ]; then
        _error "CA certificate file not found: $cacert"
        return 4
    fi

    local url="https://$hostname/on/demandware.servlet/webdav/Sites/Cartridges/$code_version"
    curl -X PROPFIND \
        --url "$url" \
        --cert-type p12 \
        --cert "$p12:$p12_password" \
        --cacert "$cacert" \
        -H "Authorization: Bearer $token" \
        -H 'Depth: 1' \
        --data-raw '<?xml version="1.0" encoding="utf-8" ?><D:propfind xmlns:D="DAV:"><D:allprop/></D:propfind>'
)

_propfind_p12 "$@"
__propfind_p12_rc=$?
unset -f _propfind_p12
if [ -n "${BASH_SOURCE[0]}" ] && [ "${BASH_SOURCE[0]}" != "$0" ]; then
    eval "unset __propfind_p12_rc; return $__propfind_p12_rc"
fi
eval "unset __propfind_p12_rc; exit $__propfind_p12_rc"