import copy

import pytest

from review_agent.application_form_fill.services.template_config import (
    DEFAULT_CONFIG_PATH,
    compute_config_hash,
    load_template_config,
    validate_template_config,
)


def test_template_config_loads_and_validates_default_yaml(settings):
    config = load_template_config()
    errors = validate_template_config(config)

    assert errors == []
    assert config["version"] == "application_form_templates_v1"
    registration = next(item for item in config["templates"] if item["code"] == "registration_certificate")
    assert registration["file_format"] == "docx"
    assert {field["key"] for field in registration["fields"]} >= {
        "applicant_name",
        "product_name",
        "package_specification",
        "main_components",
        "intended_use",
        "storage_condition_and_validity",
        "attachments",
    }
    assert all(field["target"]["type"] == "table_row" for field in registration["fields"])
    assert len(compute_config_hash(DEFAULT_CONFIG_PATH)) == 64


def test_template_config_reports_missing_source_dir():
    config = load_template_config()
    config["source_dir"] = "docs/not-exists"

    errors = validate_template_config(config)

    assert any("source_dir 不存在" in error for error in errors)


def test_template_config_reports_duplicate_code():
    config = load_template_config()
    duplicate = copy.deepcopy(config["templates"][0])
    config["templates"].append(duplicate)

    errors = validate_template_config(config)

    assert any("模板 code 重复" in error for error in errors)


def test_template_config_reports_missing_source_file():
    config = load_template_config()
    config["templates"][0]["source_file"] = "missing.docx"

    errors = validate_template_config(config)

    assert any("source_file 不存在" in error for error in errors)


def test_template_config_reports_unsupported_target_type():
    config = load_template_config()
    config["templates"][0]["fields"][0]["target"]["type"] = "content_control"

    errors = validate_template_config(config)

    assert any("target.type 不支持" in error for error in errors)


def test_template_config_loads_custom_path(tmp_path):
    config_path = tmp_path / "templates.yaml"
    config_path.write_text(
        """
version: custom
source_dir: .
templates:
  - code: custom_template
    name: Custom
    source_file: source.docx
    output_label: Custom
    file_format: docx
    fields:
      - key: product_name
        label: 产品名称
        target:
          type: table_row
          row_label: 产品名称
""".strip(),
        encoding="utf-8",
    )
    (tmp_path / "source.docx").write_bytes(b"docx")

    config = load_template_config(config_path)

    assert validate_template_config(config, base_dir=tmp_path) == []
    assert compute_config_hash(config_path)