#!/usr/bin/env python3
# form-validate v1.15 — Validate 1C managed form
# Source: https://github.com/Nikolay-Shirokov/cc-1c-skills

import argparse
import os
import re
import sys
from lxml import etree

# Регистронезависимый ввод — паритет с PS1: в PowerShell имена параметров и [ValidateSet]
# регистр не различают, в argparse совпадение точное.
def ci_parse_args(parser, argv=None):
    """parse_args по правилам PS: имена параметров и значения choices регистронезависимы."""
    argv = list(sys.argv[1:] if argv is None else argv)
    names = {s.lower(): s for a in parser._actions for s in a.option_strings}
    for i, tok in enumerate(argv):
        if tok.startswith('-') and tok.lower() in names:
            argv[i] = names[tok.lower()]
    # choices — зеркало [ValidateSet]; канонизируем ДО разбора, иначе argparse отвергнет регистр
    choice_map = {}
    for a in parser._actions:
        if a.choices:
            for s in a.option_strings:
                choice_map[s] = {str(c).lower(): c for c in a.choices}
    for i in range(len(argv) - 1):
        m = choice_map.get(argv[i])
        if m and argv[i + 1].lower() in m:
            argv[i + 1] = m[argv[i + 1].lower()]
    return parser.parse_args(argv)


F_NS = "http://v8.1c.ru/8.3/xcf/logform"
V8_NS = "http://v8.1c.ru/8.1/data/core"

NSMAP = {"f": F_NS, "v8": V8_NS}

KNOWN_INVALID_TYPES = {
    'FormDataStructure', 'FormDataCollection', 'FormDataTree',
    'FormDataTreeItem', 'FormDataCollectionItem',
    'FormGroup', 'FormField', 'FormButton', 'FormDecoration', 'FormTable',
}

VALID_CLOSED_TYPES = {
    'xs:boolean', 'xs:string', 'xs:decimal', 'xs:dateTime', 'xs:binary',
    'v8:FillChecking', 'v8:Null', 'v8:StandardPeriod', 'v8:StandardBeginningDate', 'v8:Type',
    'v8:TypeDescription', 'v8:UUID', 'v8:ValueListType', 'v8:ValueTable', 'v8:ValueTree',
    'v8:Universal', 'v8:FixedArray', 'v8:FixedStructure',
    'v8ui:Color', 'v8ui:Font', 'v8ui:FormattedString', 'v8ui:HorizontalAlign',
    'v8ui:Picture', 'v8ui:SizeChangeMode', 'v8ui:VerticalAlign',
    'dcsset:DataCompositionComparisonType', 'dcsset:DataCompositionFieldPlacement',
    'dcsset:Filter', 'dcsset:SettingsComposer', 'dcsset:DataCompositionSettings',
    'dcssch:DataCompositionSchema',
    'dcscor:DataCompositionComparisonType', 'dcscor:DataCompositionGroupType',
    'dcscor:DataCompositionPeriodAdditionType', 'dcscor:DataCompositionSortDirection', 'dcscor:Field',
    'ent:AccountType', 'ent:AccumulationRecordType', 'ent:AccountingRecordType',
}

VALID_CFG_PREFIXES = {
    'AccountingRegisterRecordSet', 'AccumulationRegisterRecordSet',
    'BusinessProcessObject', 'BusinessProcessRef',
    'CatalogObject', 'CatalogRef',
    'ChartOfAccountsObject', 'ChartOfAccountsRef',
    'ChartOfCalculationTypesObject', 'ChartOfCalculationTypesRef',
    'ChartOfCharacteristicTypesObject', 'ChartOfCharacteristicTypesRef',
    'ConstantsSet', 'DataProcessorObject', 'DocumentObject', 'DocumentRef',
    'DynamicList', 'EnumRef', 'ExchangePlanObject', 'ExchangePlanRef',
    'ExternalDataProcessorObject', 'ExternalReportObject',
    'InformationRegisterRecordManager', 'InformationRegisterRecordSet',
    'ReportObject', 'TaskObject', 'TaskRef',
}


# Корень автономной внешней обработки/отчёта. Копия общего эталона (семья
# support-guard: is_external_root, авторитет — cf-edit).
def _sg_is_external_root(xml_path):
    if not os.path.isfile(xml_path):
        return False
    try:
        mx = etree.parse(xml_path).getroot()
        for child in mx:
            if isinstance(child.tag, str):
                return child.tag.split("}")[-1] in ("ExternalDataProcessor", "ExternalReport")
    except Exception:
        return False
    return False


# Версия формата выгрузки. Копия общего эталона (семья detect_format_version, авторитет —
# form-compile): та же ветка для автономной EPF/ERF, где версию несёт корень обработки.
def detect_format_version(d):
    while d:
        # Автономная внешняя обработка/отчёт: своего Configuration.xml у неё нет, версию несёт
        # корень самой обработки. Без этого форма и макет внутри обработки 2.21 писались бы 2.17.
        ext_path = d + ".xml"
        if os.path.isfile(ext_path):
            with open(ext_path, "r", encoding="utf-8-sig") as f:
                ext_head = f.read(2000)
            if re.search(r'<(ExternalDataProcessor|ExternalReport)[ >]', ext_head):
                m = re.search(r'<MetaDataObject[^>]+version="(\d+\.\d+)"', ext_head)
                if m:
                    return m.group(1)
        cfg_path = os.path.join(d, "Configuration.xml")
        if os.path.isfile(cfg_path):
            with open(cfg_path, "r", encoding="utf-8-sig") as f:
                head = f.read(2000)
            m = re.search(r'<MetaDataObject[^>]+version="(\d+\.\d+)"', head)
            if m:
                return m.group(1)
        parent = os.path.dirname(d)
        if parent == d:
            break
        d = parent
    return "2.17"


def localname(el):
    return etree.QName(el.tag).localname


def main():
    sys.stdout.reconfigure(encoding="utf-8")
    sys.stderr.reconfigure(encoding="utf-8")
    parser = argparse.ArgumentParser(description="Validate 1C managed form", allow_abbrev=False)
    parser.add_argument("-FormPath", "-Path", required=True)
    parser.add_argument("-Detailed", action="store_true")
    parser.add_argument("-MaxErrors", type=int, default=30)
    args = ci_parse_args(parser)

    form_path = args.FormPath
    detailed = args.Detailed
    max_errors = args.MaxErrors

    if not os.path.isabs(form_path):
        form_path = os.path.join(os.getcwd(), form_path)

    # A: Directory → Ext/Form.xml
    if os.path.isdir(form_path):
        form_path = os.path.join(form_path, 'Ext', 'Form.xml')
    # B1: Missing Ext/ (e.g. Forms/Форма/Form.xml → Forms/Форма/Ext/Form.xml)
    if not os.path.exists(form_path):
        fn = os.path.basename(form_path)
        if fn == 'Form.xml':
            c = os.path.join(os.path.dirname(form_path), 'Ext', fn)
            if os.path.exists(c):
                form_path = c
    # B2: Descriptor (Forms/Форма.xml → Forms/Форма/Ext/Form.xml)
    if not os.path.exists(form_path) and form_path.endswith('.xml'):
        stem = os.path.splitext(os.path.basename(form_path))[0]
        parent = os.path.dirname(form_path)
        c = os.path.join(parent, stem, 'Ext', 'Form.xml')
        if os.path.exists(c):
            form_path = c

    if not os.path.isfile(form_path):
        print(f"File not found: {form_path}", file=sys.stderr)
        sys.exit(1)

    # --- Load XML ---
    try:
        xml_parser = etree.XMLParser(remove_blank_text=True)
        tree = etree.parse(form_path, xml_parser)
    except Exception as e:
        print(f"[ERROR] XML parse error: {e}")
        print()
        print("---")
        print("Errors: 1, Warnings: 0")
        sys.exit(1)

    root = tree.getroot()

    # Detect context: config vs EPF/ERF
    is_config_context = False
    config_xml_path = ''
    version_anchor = ''
    walk_dir = os.path.dirname(os.path.abspath(form_path))
    for _ in range(15):
        parent = os.path.dirname(walk_dir)
        if parent == walk_dir:
            break
        # Порядок проверок тот же, что у detect_format_version: сначала корень автономной обработки,
        # потом Configuration.xml — иначе форма внутри EPF, лежащей в дереве конфигурации, взяла бы
        # версию конфигурации.
        ext_root = walk_dir + '.xml'
        if not version_anchor:
            if _sg_is_external_root(ext_root):
                # Ближайший якорь побеждает: автономная обработка остаётся автономной, даже если её
                # исходники лежат внутри дерева с Configuration.xml (типовая раскладка проекта:
                # src/cf рядом с src/epf). Иначе её собственные External*-типы считались бы ошибкой.
                version_anchor = ext_root
                break
        if os.path.isfile(os.path.join(walk_dir, 'Configuration.xml')):
            is_config_context = True
            config_xml_path = os.path.join(walk_dir, 'Configuration.xml')
            if not version_anchor:
                version_anchor = config_xml_path
            break
        walk_dir = parent

    errors = 0
    warnings = 0
    ok_count = 0
    stopped = False
    output_lines = []

    def report_ok(msg):
        nonlocal ok_count
        ok_count += 1
        if detailed:
            output_lines.append(f"[OK]    {msg}")

    def report_error(msg):
        nonlocal errors, stopped
        errors += 1
        output_lines.append(f"[ERROR] {msg}")
        if errors >= max_errors:
            stopped = True

    def report_warn(msg):
        nonlocal warnings
        warnings += 1
        output_lines.append(f"[WARN]  {msg}")

    # --- Form name from path ---
    form_name = os.path.splitext(os.path.basename(form_path))[0]
    parent_dir = os.path.dirname(form_path)
    if parent_dir:
        ext_dir = os.path.basename(parent_dir)
        if ext_dir == "Ext":
            form_dir = os.path.dirname(parent_dir)
            if form_dir:
                form_name = os.path.basename(form_dir)

    output_lines.append(f"=== Validation: Form.{form_name} ===")
    output_lines.append("")

    # Early BaseForm detection
    has_base_form = root.find(f"{{{F_NS}}}BaseForm") is not None

    # --- Check 1: Root element and version ---
    if localname(root) != "Form":
        report_error(f"Root element is '{localname(root)}', expected 'Form'")
    else:
        version = root.get("version", "")
        # Лестница версий формата: 2.17 (8.3.20-8.3.24), 2.18 (8.3.25), 2.19 (8.3.26), 2.20 (8.3.27).
        if version in ("2.17", "2.18", "2.19", "2.20"):
            report_ok(f"Root element: Form version={version}")
        elif version:
            report_warn(f"Form version='{version}' (expected 2.17-2.20)")
        else:
            report_warn("Form version attribute missing")

    # --- Check 2: AutoCommandBar ---
    if not stopped:
        acb = root.find(f"{{{F_NS}}}AutoCommandBar")
        if acb is not None:
            acb_name = acb.get("name", "")
            acb_id = acb.get("id", "")
            # id=-1 — соглашение, а не требование: в корпусе УТ/БП/ERP так у 21 094 форм из 21 097,
            # но три формы платформа выгружает с обычным id и грузит их без нареканий. Поэтому
            # предупреждение; ошибка — только если id вовсе не число.
            if acb_id == "-1":
                report_ok(f"AutoCommandBar: name='{acb_name}', id={acb_id}")
            elif re.match(r'^-?\d+$', acb_id):
                report_warn(f"AutoCommandBar id='{acb_id}', usually '-1'")
            else:
                report_error(f"AutoCommandBar id='{acb_id}' is not a number")
        else:
            report_error("AutoCommandBar element missing")

    # --- Collect all elements with IDs ---
    element_ids = {}    # id -> name
    element_names = {}  # name -> id (имена элементов уникальны в пределах формы)
    all_elements = []  # list of dicts {Name, Tag, Id, ParentName, Node}

    def collect_elements(node, parent_name):
        nonlocal stopped
        for child in node:
            if not isinstance(child.tag, str):
                continue

            name = child.get("name", "")
            eid = child.get("id", "")

            if name and eid:
                tag = localname(child)

                all_elements.append({
                    "Name": name,
                    "Tag": tag,
                    "Id": eid,
                    "ParentName": parent_name,
                    "Node": child,
                })

                if eid != "-1":
                    if eid in element_ids:
                        report_error(f"Duplicate element id={eid}: '{name}' and '{element_ids[eid]}'")
                    else:
                        element_ids[eid] = name

                    # Имена элементов уникальны (требование 1С)
                    if name in element_names:
                        report_error(f"Duplicate element name '{name}': id={eid} and id={element_names[name]}")
                    else:
                        element_names[name] = eid

                child_items = child.find(f"{{{F_NS}}}ChildItems")
                if child_items is not None:
                    collect_elements(child_items, name)

    child_items_root = root.find(f"{{{F_NS}}}ChildItems")
    if child_items_root is not None:
        collect_elements(child_items_root, "(root)")

    acb = root.find(f"{{{F_NS}}}AutoCommandBar")
    if acb is not None:
        acb_children = acb.find(f"{{{F_NS}}}ChildItems")
        if acb_children is not None:
            collect_elements(acb_children, "\u0424\u043e\u0440\u043c\u0430\u041a\u043e\u043c\u0430\u043d\u0434\u043d\u0430\u044f\u041f\u0430\u043d\u0435\u043b\u044c")

    # --- Check 3: Unique element IDs ---
    if not stopped:
        # Duplicates already reported during collection
        dup_count = 0
        id_counts = {}
        for el in all_elements:
            eid = el["Id"]
            if eid == "-1":
                continue
            id_counts[eid] = id_counts.get(eid, 0) + 1
        dup_count = sum(1 for v in id_counts.values() if v > 1)
        if dup_count == 0:
            report_ok(f"Unique element IDs: {len(element_ids)} elements")

    # --- Collect attributes (separate ID pool) ---
    attr_map = {}   # name -> node
    attr_ids = {}   # id -> name

    attr_nodes_parent = root.find(f"{{{F_NS}}}Attributes")
    attr_nodes = []
    if attr_nodes_parent is not None:
        attr_nodes = attr_nodes_parent.findall(f"{{{F_NS}}}Attribute")

    for attr in attr_nodes:
        attr_name = attr.get("name", "")
        attr_id = attr.get("id", "")
        if attr_name:
            # Имена реквизитов уникальны среди реквизитов (отдельный неймспейс от элементов)
            if attr_name in attr_map:
                report_error(f"Duplicate attribute name '{attr_name}': id={attr_id} and id={attr_map[attr_name].get('id', '')}")
            attr_map[attr_name] = attr
        if attr_id:
            if attr_id in attr_ids:
                report_error(f"Duplicate attribute id={attr_id}: '{attr_name}' and '{attr_ids[attr_id]}'")
            else:
                attr_ids[attr_id] = attr_name

        # Column IDs uniqueness within parent
        col_ids = {}
        col_names = {}  # имена колонок уникальны в пределах своего реквизита
        columns = attr.find(f"{{{F_NS}}}Columns")
        if columns is not None:
            for col in columns.findall(f"{{{F_NS}}}Column"):
                col_id = col.get("id", "")
                col_name = col.get("name", "")
                if col_id:
                    if col_id in col_ids:
                        report_error(f"Duplicate column id={col_id} in '{attr_name}': '{col_name}' and '{col_ids[col_id]}'")
                    else:
                        col_ids[col_id] = col_name
                if col_name:
                    if col_name in col_names:
                        report_error(f"Duplicate column name '{col_name}' in '{attr_name}': id={col_id} and id={col_names[col_name]}")
                    else:
                        col_names[col_name] = col_id

    if not stopped:
        if attr_ids:
            report_ok(f"Unique attribute IDs: {len(attr_ids)} entries")

    # --- Collect commands (separate ID pool) ---
    cmd_map = {}   # name -> node
    cmd_ids = {}   # id -> name

    cmd_nodes_parent = root.find(f"{{{F_NS}}}Commands")
    cmd_nodes = []
    if cmd_nodes_parent is not None:
        cmd_nodes = cmd_nodes_parent.findall(f"{{{F_NS}}}Command")

    for cmd in cmd_nodes:
        cmd_name = cmd.get("name", "")
        cmd_id = cmd.get("id", "")
        if cmd_name:
            # Имена команд уникальны среди команд (отдельный неймспейс)
            if cmd_name in cmd_map:
                report_error(f"Duplicate command name '{cmd_name}': id={cmd_id} and id={cmd_map[cmd_name].get('id', '')}")
            cmd_map[cmd_name] = cmd
        if cmd_id:
            if cmd_id in cmd_ids:
                report_error(f"Duplicate command id={cmd_id}: '{cmd_name}' and '{cmd_ids[cmd_id]}'")
            else:
                cmd_ids[cmd_id] = cmd_name

    if not stopped:
        if cmd_ids:
            report_ok(f"Unique command IDs: {len(cmd_ids)} entries")

    # --- Collect parameters (separate name pool, без id) ---
    param_names = {}  # name -> True (имена параметров уникальны среди параметров)
    params_parent = root.find(f"{{{F_NS}}}Parameters")
    if params_parent is not None:
        for param in params_parent.findall(f"{{{F_NS}}}Parameter"):
            param_name = param.get("name", "")
            if param_name:
                if param_name in param_names:
                    report_error(f"Duplicate parameter name '{param_name}'")
                else:
                    param_names[param_name] = True

    # --- Check 4: Companion elements ---
    companion_rules = {
        "InputField": ["ContextMenu", "ExtendedTooltip"],
        "CheckBoxField": ["ContextMenu", "ExtendedTooltip"],
        "LabelDecoration": ["ContextMenu", "ExtendedTooltip"],
        "LabelField": ["ContextMenu", "ExtendedTooltip"],
        "PictureDecoration": ["ContextMenu", "ExtendedTooltip"],
        "PictureField": ["ContextMenu", "ExtendedTooltip"],
        "CalendarField": ["ContextMenu", "ExtendedTooltip"],
        "UsualGroup": ["ExtendedTooltip"],
        "Pages": ["ExtendedTooltip"],
        "Page": ["ExtendedTooltip"],
        "Button": ["ExtendedTooltip"],
        "Table": ["ContextMenu", "AutoCommandBar", "SearchStringAddition", "ViewStatusAddition", "SearchControlAddition"],
    }

    if not stopped:
        companion_errors = 0
        companion_checked = 0

        for el in all_elements:
            if stopped:
                break
            tag = el["Tag"]
            el_name = el["Name"]
            node = el["Node"]

            if tag not in companion_rules:
                continue

            required = companion_rules[tag]
            companion_checked += 1

            for comp_tag in required:
                comp_node = node.find(f"{{{F_NS}}}{comp_tag}")
                if comp_node is None:
                    report_error(f"[{tag}] '{el_name}': missing companion <{comp_tag}>")
                    companion_errors += 1

        if companion_errors == 0 and companion_checked > 0:
            report_ok(f"Companion elements: {companion_checked} elements checked")

    # --- Check 5: DataPath -> Attribute references ---
    if not stopped:
        path_errors = 0
        path_checked = 0
        path_base_skipped = 0

        # All data-binding tags whose value is an attribute path (root must exist in <Attributes>).
        binding_tags = ["DataPath", "TitleDataPath", "FooterDataPath", "HeaderDataPath",
                        "MultipleValueDataPath", "MultipleValuePresentDataPath", "RowPictureDataPath", "MultipleValuePictureDataPath"]

        skip_tags = {"ContextMenu", "ExtendedTooltip", "AutoCommandBar", "SearchStringAddition", "ViewStatusAddition", "SearchControlAddition"}

        for el in all_elements:
            if stopped:
                break
            tag = el["Tag"]
            el_name = el["Name"]
            node = el["Node"]

            if tag in skip_tags:
                continue

            if has_base_form and el["Id"]:
                try:
                    if int(el["Id"]) < 1000000:
                        path_base_skipped += 1
                        continue
                except (ValueError, TypeError):
                    pass

            for b_tag in binding_tags:
                if stopped:
                    break
                dp_node = node.find(f"{{{F_NS}}}{b_tag}")
                if dp_node is None:
                    continue

                data_path = (dp_node.text or "").strip()
                if not data_path:
                    continue

                # Opaque platform-internal shapes — not validatable from Form.xml alone:
                #   - bare numeric (e.g. "10", "1000003") — internal index
                #   - "N/M:<uuid>" — metadata reference by UUID
                if re.match(r'^\d+$', data_path) or re.match(r'^\d+/\d+:[0-9a-fA-F-]+$', data_path):
                    continue

                path_checked += 1

                clean_path = re.sub(r'\[\d+\]', '', data_path)
                # Strip leading '~' (current row of DynamicList: ~Список.Поле)
                if clean_path.startswith('~'):
                    clean_path = clean_path[1:]
                segments = clean_path.split(".")
                root_attr = segments[0]

                # Resolve Items.<TableName>.CurrentData.<Field>... — table element, not attribute.
                # Разрешаем ЦЕПОЧКОЙ: таблица во вложенной таблице сама привязана через Items.*, и один
                # шаг оставлял корнем литерал «Items» — форма платформы объявлялась битой (типовые
                # НастройкаПравилОбработкиЗаявокСотрудников в БП и ERP).
                items_hops = 0
                items_broken = False
                while root_attr == 'Items':
                    items_hops += 1
                    if items_hops > 10:          # страховка от кольца ссылок
                        items_broken = True
                        break
                    if len(segments) < 3 or segments[2] != 'CurrentData':
                        report_warn(f"[{tag}] '{el_name}': {b_tag}='{data_path}' — unknown Items.* shape, expected Items.<Table>.CurrentData.*")
                        items_broken = True
                        break
                    table_name = segments[1]
                    table_el = None
                    for candidate in all_elements:
                        if candidate["Tag"] == 'Table' and candidate["Name"] == table_name:
                            table_el = candidate
                            break
                    if table_el is None:
                        report_error(f"[{tag}] '{el_name}': {b_tag}='{data_path}' — table element '{table_name}' not found")
                        path_errors += 1
                        items_broken = True
                        break
                    table_dp_node = table_el["Node"].find(f"{{{F_NS}}}DataPath")
                    if table_dp_node is None or not (table_dp_node.text or "").strip():
                        items_broken = True
                        break
                    table_dp = re.sub(r'\[\d+\]', '', (table_dp_node.text or "").strip())
                    if table_dp.startswith('~'):
                        table_dp = table_dp[1:]
                    segments = table_dp.split(".")
                    root_attr = segments[0]
                if items_broken:
                    continue

                if root_attr not in attr_map:
                    report_error(f"[{tag}] '{el_name}': {b_tag}='{data_path}' — attribute '{root_attr}' not found")
                    path_errors += 1

        path_msg = ""
        if path_checked > 0:
            path_msg = f"{path_checked} paths checked"
        if path_base_skipped > 0:
            skip_note = f"{path_base_skipped} base skipped"
            path_msg = f"{path_msg}, {skip_note}" if path_msg else skip_note
        if path_errors == 0 and path_msg:
            report_ok(f"Data bindings: {path_msg}")
        elif path_errors == 0:
            report_ok("Data bindings: none")

    # --- Check 6: Button command references ---
    if not stopped:
        cmd_errors = 0
        cmd_checked = 0

        for el in all_elements:
            if stopped:
                break
            tag = el["Tag"]
            el_name = el["Name"]
            node = el["Node"]

            if tag != "Button":
                continue

            cmd_node = node.find(f"{{{F_NS}}}CommandName")
            if cmd_node is None:
                continue

            cmd_ref = (cmd_node.text or "").strip()
            if not cmd_ref:
                continue

            m = re.match(r'^Form\.Command\.(.+)$', cmd_ref)
            if m:
                cmd_name_ref = m.group(1)
                cmd_checked += 1
                if cmd_name_ref not in cmd_map:
                    report_error(f"[Button] '{el_name}': CommandName='{cmd_ref}' \u2014 command '{cmd_name_ref}' not found in Commands")
                    cmd_errors += 1

        if cmd_errors == 0 and cmd_checked > 0:
            report_ok(f"Command references: {cmd_checked} buttons checked")
        elif cmd_checked == 0:
            report_ok("Command references: none")

    # --- Check 7: Events have handler names ---
    if not stopped:
        event_errors = 0
        event_checked = 0

        # Form-level events
        form_events = root.find(f"{{{F_NS}}}Events")
        if form_events is not None:
            for evt in form_events.findall(f"{{{F_NS}}}Event"):
                evt_name = evt.get("name", "")
                handler = (evt.text or "").strip()
                event_checked += 1
                if not handler:
                    report_error(f"Form event '{evt_name}': empty handler name")
                    event_errors += 1

        # Element-level events
        for el in all_elements:
            if stopped:
                break
            tag = el["Tag"]
            el_name = el["Name"]
            node = el["Node"]

            events_node = node.find(f"{{{F_NS}}}Events")
            if events_node is None:
                continue

            for evt in events_node.findall(f"{{{F_NS}}}Event"):
                evt_name = evt.get("name", "")
                handler = (evt.text or "").strip()
                event_checked += 1
                if not handler:
                    report_error(f"[{tag}] '{el_name}' event '{evt_name}': empty handler name")
                    event_errors += 1

        if event_errors == 0 and event_checked > 0:
            report_ok(f"Event handlers: {event_checked} events checked")
        elif event_checked == 0:
            report_ok("Event handlers: none")

    # --- Check 8: Command actions ---
    if not stopped:
        action_errors = 0
        action_checked = 0

        # Предупреждение, а не ошибка: <Action> может назначаться в рантайме
        # (`Команда.Действие = "Подключаемый_…"` в ПриСозданииНаСервере) — приём типовых конфигураций
        # там, где обработчик существует не во всякой сборке. Назначать может и чужой модуль
        # (переопределяемый слой, подключаемые команды), так что по одному Form.xml не решить.
        # Корпус УТ/БП/ERP: 406 таких команд на 275 формах, произведённых платформой.
        for cmd in cmd_nodes:
            if stopped:
                break
            cmd_name = cmd.get("name", "")
            action_node = cmd.find(f"{{{F_NS}}}Action")
            action_checked += 1
            if action_node is None or not (action_node.text or "").strip():
                report_warn(f"Command '{cmd_name}': no Action — handler must be assigned at runtime, otherwise the command does nothing")
                action_errors += 1

        if action_errors == 0 and action_checked > 0:
            report_ok(f"Command actions: {action_checked} commands checked")
        elif action_checked == 0:
            report_ok("Command actions: none")

    # --- Check 9: MainAttribute count ---
    if not stopped:
        main_count = 0
        for attr in attr_nodes:
            main_node = attr.find(f"{{{F_NS}}}MainAttribute")
            if main_node is not None and (main_node.text or "") == "true":
                main_count += 1

        if main_count <= 1:
            main_info = "1 main attribute" if main_count == 1 else "no main attribute"
            report_ok(f"MainAttribute: {main_info}")
        else:
            report_error(f"Multiple MainAttribute=true ({main_count} found, expected 0 or 1)")

    # --- Check 10: Title must be multilingual XML ---
    if not stopped:
        title_node = root.find(f"{{{F_NS}}}Title")
        if title_node is not None:
            v8_items = title_node.findall(f"{{{V8_NS}}}item")
            if len(v8_items) == 0 and (title_node.text or "").strip():
                report_error(f"Form Title is plain text ('{(title_node.text or '').strip()}') \u2014 must be multilingual XML (<v8:item>). Use top-level 'title' key in form-compile DSL.")
            else:
                report_ok("Title: multilingual XML")

    # --- Check 11: Extension-specific validations ---
    base_form_node = root.find(f"{{{F_NS}}}BaseForm")
    is_extension = base_form_node is not None

    if not stopped and is_extension:
        # 11a. BaseForm version
        bf_version = base_form_node.get("version", "")
        if bf_version:
            report_ok(f"BaseForm: version={bf_version}")
        else:
            report_warn("BaseForm: version attribute missing")

        # 11b. callType values validation
        valid_call_types = {"Before", "After", "Override"}
        ct_errors = 0
        ct_checked = 0

        form_events_node = root.find(f"{{{F_NS}}}Events")
        if form_events_node is not None:
            for evt in form_events_node.findall(f"{{{F_NS}}}Event"):
                ct = evt.get("callType", "")
                if ct:
                    ct_checked += 1
                    if ct not in valid_call_types:
                        report_error(f"Form event '{evt.get('name', '')}': invalid callType='{ct}' (expected: Before, After, Override)")
                        ct_errors += 1

        for el in all_elements:
            if stopped:
                break
            events_node = el["Node"].find(f"{{{F_NS}}}Events")
            if events_node is None:
                continue
            for evt in events_node.findall(f"{{{F_NS}}}Event"):
                ct = evt.get("callType", "")
                if ct:
                    ct_checked += 1
                    if ct not in valid_call_types:
                        report_error(f"[{el['Tag']}] '{el['Name']}' event '{evt.get('name', '')}': invalid callType='{ct}'")
                        ct_errors += 1

        for cmd in cmd_nodes:
            if stopped:
                break
            cmd_name = cmd.get("name", "")
            for action in cmd.findall(f"{{{F_NS}}}Action"):
                ct = action.get("callType", "")
                if ct:
                    ct_checked += 1
                    if ct not in valid_call_types:
                        report_error(f"Command '{cmd_name}' Action: invalid callType='{ct}'")
                        ct_errors += 1

        if not stopped and ct_errors == 0 and ct_checked > 0:
            report_ok(f"callType values: {ct_checked} checked")

        # 11c. Extension ID ranges
        base_attr_names = set()
        base_cmd_names = set()

        bf_attrs = base_form_node.find(f"{{{F_NS}}}Attributes")
        if bf_attrs is not None:
            for b_attr in bf_attrs.findall(f"{{{F_NS}}}Attribute"):
                ba_name = b_attr.get("name", "")
                if ba_name:
                    base_attr_names.add(ba_name)

        bf_cmds = base_form_node.find(f"{{{F_NS}}}Commands")
        if bf_cmds is not None:
            for b_cmd in bf_cmds.findall(f"{{{F_NS}}}Command"):
                bc_name = b_cmd.get("name", "")
                if bc_name:
                    base_cmd_names.add(bc_name)

        id_warn_count = 0
        for attr in attr_nodes:
            a_name = attr.get("name", "")
            a_id = attr.get("id", "")
            if a_name and a_name not in base_attr_names and a_id:
                try:
                    int_id = int(a_id)
                    if int_id < 1000000:
                        report_warn(f"Attribute '{a_name}' (id={a_id}): extension-added attribute has id < 1000000")
                        id_warn_count += 1
                except (ValueError, TypeError):
                    pass

        for cmd in cmd_nodes:
            c_name = cmd.get("name", "")
            c_id = cmd.get("id", "")
            if c_name and c_name not in base_cmd_names and c_id:
                try:
                    int_id = int(c_id)
                    if int_id < 1000000:
                        report_warn(f"Command '{c_name}' (id={c_id}): extension-added command has id < 1000000")
                        id_warn_count += 1
                except (ValueError, TypeError):
                    pass

        if not stopped and id_warn_count == 0:
            ext_attr_count = sum(1 for a in attr_nodes if a.get("name", "") not in base_attr_names)
            ext_cmd_count = sum(1 for c in cmd_nodes if c.get("name", "") not in base_cmd_names)
            if (ext_attr_count + ext_cmd_count) > 0:
                report_ok(f"Extension ID ranges: {ext_attr_count} attr(s), {ext_cmd_count} cmd(s) \u2014 all >= 1000000")

        # 11d. \u041f\u0443\u0442\u0438 \u043d\u0430 \u043e\u0441\u043d\u043e\u0432\u043d\u043e\u0439 \u0440\u0435\u043a\u0432\u0438\u0437\u0438\u0442, \u043a\u043e\u0442\u043e\u0440\u043e\u0433\u043e \u0444\u043e\u0440\u043c\u0430 \u043d\u0435 \u043e\u0431\u044a\u044f\u0432\u043b\u044f\u0435\u0442.
        # Check 5 \u0442\u0430\u043a\u043e\u0435 \u043f\u0440\u043e\u043f\u0443\u0441\u043a\u0430\u0435\u0442: \u0443 \u0437\u0430\u0438\u043c\u0441\u0442\u0432\u043e\u0432\u0430\u043d\u043d\u043e\u0439 \u0444\u043e\u0440\u043c\u044b \u043e\u043d \u043d\u0435 \u043f\u0440\u043e\u0432\u0435\u0440\u044f\u0435\u0442 \u0431\u0430\u0437\u043e\u0432\u044b\u0435 \u044d\u043b\u0435\u043c\u0435\u043d\u0442\u044b (id < 1000000),
        # \u0430 \u043f\u0440\u0438\u0432\u044f\u0437\u043a\u0438 \u0432 <xr:Link> \u0432\u043e\u043e\u0431\u0449\u0435 \u0432\u043d\u0435 \u0435\u0433\u043e \u0441\u043f\u0438\u0441\u043a\u0430 \u0442\u0435\u0433\u043e\u0432. \u041c\u0435\u0436\u0434\u0443 \u0442\u0435\u043c \u044d\u0442\u043e \u0440\u043e\u0432\u043d\u043e \u0442\u043e\u0442 \u0441\u043b\u0443\u0447\u0430\u0439, \u043d\u0430 \u043a\u043e\u0442\u043e\u0440\u043e\u043c
        # \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u0430 \u043e\u0442\u0432\u0435\u0440\u0433\u0430\u0435\u0442 \u0437\u0430\u0433\u0440\u0443\u0437\u043a\u0443: \u00ab\u041d\u0435\u0432\u0435\u0440\u043d\u044b\u0439 \u043f\u0443\u0442\u044c \u043a \u043f\u043e\u043b\u044e - \u041e\u0431\u044a\u0435\u043a\u0442.X\u00bb. \u041f\u0440\u0430\u0432\u0438\u043b\u043e: \u0435\u0441\u043b\u0438 \u043e\u0441\u043d\u043e\u0432\u043d\u043e\u0439 \u0440\u0435\u043a\u0432\u0438\u0437\u0438\u0442
        # \u043d\u0435 \u043e\u0431\u044a\u044f\u0432\u043b\u0435\u043d \u0432 <Attributes> \u0444\u043e\u0440\u043c\u044b, \u043b\u044e\u0431\u043e\u0439 \u043f\u0443\u0442\u044c \u0441 \u043a\u043e\u0440\u043d\u0435\u043c \u00ab\u041e\u0431\u044a\u0435\u043a\u0442\u00bb \u043d\u0435 \u0440\u0430\u0437\u0440\u0435\u0448\u0438\u0442\u0441\u044f.
        main_attr_declared = False
        for attr in attr_nodes:
            ma_node = attr.find(f"{{{F_NS}}}MainAttribute")
            if ma_node is not None and (ma_node.text or "").strip() == "true":
                main_attr_declared = True
                break

        if not main_attr_declared:
            # \u0417\u043d\u0430\u0447\u0435\u043d\u0438\u044f \u043f\u0440\u0438\u0432\u044f\u0437\u043e\u043a \u0438\u0449\u0435\u043c \u0442\u0435\u043a\u0441\u0442\u043e\u043c: \u0438\u043d\u0442\u0435\u0440\u0435\u0441\u0443\u044e\u0442 \u0438 \u043e\u0431\u044b\u0447\u043d\u044b\u0435 \u0442\u0435\u0433\u0438, \u0438 <xr:DataPath> \u0432\u043d\u0443\u0442\u0440\u0438
            # <ChoiceParameterLinks>, \u0430 \u0442\u0435 \u0436\u0438\u0432\u0443\u0442 \u0432 \u0447\u0443\u0436\u043e\u043c \u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u0441\u0442\u0432\u0435 \u0438\u043c\u0451\u043d.
            with open(form_path, "r", encoding="utf-8-sig") as fh:
                raw_form = fh.read()
            main_base = base_form_node.find(f"{{{F_NS}}}Attributes/{{{F_NS}}}Attribute[{{{F_NS}}}MainAttribute='true']")
            dangling_paths = set(re.findall(r'<(?:\w+:)?\w*DataPath[^>]*>(\u041e\u0431\u044a\u0435\u043a\u0442\.[^<]+)</(?:\w+:)?\w*DataPath>', raw_form))
            if dangling_paths:
                shown = sorted(dangling_paths)
                sample = ", ".join(shown[:3])
                suffix = f" (\u0438 \u0435\u0449\u0451 {len(shown) - 3})" if len(shown) > 3 else ""
                report_error(f"Path(s) rooted at '\u041e\u0431\u044a\u0435\u043a\u0442' but the form declares no MainAttribute: {sample}{suffix}")
            elif main_base is not None:
                report_ok("Object paths: none dangling (MainAttribute not declared)")

    # Check callType without BaseForm
    if not stopped and not is_extension:
        call_type_without_base = False
        fe_node = root.find(f"{{{F_NS}}}Events")
        if fe_node is not None:
            for evt in fe_node.findall(f"{{{F_NS}}}Event"):
                if evt.get("callType"):
                    call_type_without_base = True
                    break
        if not call_type_without_base:
            for cmd in cmd_nodes:
                for action in cmd.findall(f"{{{F_NS}}}Action"):
                    if action.get("callType"):
                        call_type_without_base = True
                        break
                if call_type_without_base:
                    break
        if call_type_without_base:
            report_warn("callType attributes found but no BaseForm \u2014 possible incorrect structure")

    # --- Check 12: Type validation ---
    if not stopped:
        type_nodes = root.xpath('//v8:Type', namespaces={'v8': V8_NS})
        type_error_count = 0
        type_warn_count = 0
        type_count = len(type_nodes)

        for tn in type_nodes:
            if stopped:
                break
            tv = (tn.text or "").strip()
            if not tv:
                continue

            if tv in KNOWN_INVALID_TYPES:
                report_error(f'12. Type "{tv}": invalid runtime/UI type (not valid in XDTO schema)')
                type_error_count += 1
            elif tv in VALID_CLOSED_TYPES:
                pass  # OK
            elif tv.startswith("cfg:"):
                suffix = tv[4:]  # after "cfg:"
                prefix = suffix.split(".")[0]
                if prefix in VALID_CFG_PREFIXES or suffix == "DynamicList":
                    # ExternalDataProcessorObject/ExternalReportObject valid only in EPF/ERF context
                    if is_config_context and prefix in ('ExternalDataProcessorObject', 'ExternalReportObject'):
                        report_error(f'12. Type "{tv}": External* type in configuration context (use DataProcessorObject/ReportObject instead)')
                        type_error_count += 1
                else:
                    report_warn(f'12. Type "{tv}": unrecognized cfg prefix')
                    type_warn_count += 1
            elif ":" in tv:
                pass  # unknown namespace, pass through
            else:
                report_warn(f'12. Type "{tv}": bare type without namespace prefix')
                type_warn_count += 1

        if type_error_count == 0 and type_warn_count == 0:
            if type_count > 0:
                report_ok(f'12. Types: {type_count} values, all valid')
            else:
                report_ok('12. Types: no type values to check')

    # --- Check 13: префиксы в значениях объявлены в самом файле ---
    # `cfg:DataProcessorObject.X` в <v8:Type> при незадекларированном xmlns:cfg — валидный XML, который
    # платформа не читает вовсе: «Исключение XDTO произошло при чтении файла». Ошибка типична для
    # рукописного XML: префикс скопирован из чужой формы, а объявление в корне забыто. Область видимости
    # считаем по узлу (nsmap элемента), а не по корню: локальная xmlns на элементе законна.
    if not stopped:
        prefix_errors = 0
        prefix_checked = 0
        prefix_re = re.compile(r'^([A-Za-z_][A-Za-z0-9_.-]*):.+$')

        for node in root.iter():
            if not isinstance(node.tag, str):
                continue
            ln = localname(node)
            values = []
            if ln in ('Type', 'TypeSet'):
                values.append((node.text or '').strip())
            xsi_type = node.get(f'{{{"http://www.w3.org/2001/XMLSchema-instance"}}}type')
            if xsi_type:
                values.append(xsi_type.strip())
            for val in values:
                if not val:
                    continue
                m = prefix_re.match(val)
                if not m:
                    continue
                prefix_checked += 1
                pfx = m.group(1)
                if pfx not in node.nsmap:
                    kind = "xsi:type" if val == xsi_type else "Type"
                    report_error(f"13. {kind} '{val}': namespace prefix '{pfx}:' is not declared "
                                 "— the platform cannot read the file (XDTO)")
                    prefix_errors += 1

        if prefix_checked == 0:
            report_ok('13. Namespace prefixes: nothing to check')
        elif prefix_errors == 0:
            report_ok(f'13. Namespace prefixes: {prefix_checked} values, all declared')

    # --- Check 14: версия формата формы совпадает с версией выгрузки ---
    # Версию задаёт платформа, которой выгружали, и в пределах одной выгрузки она едина. Форма из
    # другой версии — «Неизвестная версия формата N загружаемого файла»: платформа не читает файл,
    # который новее её самой. Источник версии ищем общим helper-ом: он же покрывает автономную
    # внешнюю обработку/отчёт, где Configuration.xml нет и версию несёт корень самой обработки.
    if not stopped and version_anchor:
        form_ver = root.get('version', '')
        dump_ver = detect_format_version(os.path.dirname(os.path.abspath(form_path)))

        if not form_ver:
            report_ok('14. Format version: not comparable')
        elif form_ver != dump_ver:
            report_error(f'14. Format version {form_ver} differs from the dump ({dump_ver}) '
                         '— a dump carries one version, the platform refuses a file it cannot read')
        else:
            report_ok(f'14. Format version: {form_ver}, matches the dump')

    # --- Finalize ---
    checks = ok_count + errors + warnings
    if errors == 0 and warnings == 0 and not detailed:
        result = f"=== Validation OK: Form.{form_name} ({checks} checks) ==="
    else:
        output_lines.append("")
        output_lines.append(f"=== Result: {errors} errors, {warnings} warnings ({checks} checks) ===")
        result = "\n".join(output_lines)

    print(result)

    if errors > 0:
        sys.exit(1)
    else:
        sys.exit(0)


if __name__ == "__main__":
    main()