"""投标函字段填充不得把混合格式段落压平到第一个 run。"""
import os
import tempfile
import unittest
import xml.etree.ElementTree as ET

from docx import Document
from docx.enum.text import WD_UNDERLINE

from models import Chapter
from step4_writing import _fill_docx_paragraph_text, _save_chapter_docx, _w_tag


class Step4UnderlineTests(unittest.TestCase):
    def test_cross_run_placeholder_keeps_untouched_run_properties(self):
        doc = Document()
        p = doc.add_paragraph("参加")
        for value in ("%%项", "目名称%%"):
            run = p.add_run(value)
            run.underline = WD_UNDERLINE.DOUBLE
            run.bold = True
        p.add_run("，承诺")
        p.add_run("固定下划线文字").underline = True
        p.add_run("。")
        xml = ET.fromstring(p._p.xml)
        properties = [ET.tostring(r.find(_w_tag("rPr")))
                      if r.find(_w_tag("rPr")) is not None else None
                      for r in xml.iter(_w_tag("r"))]
        _fill_docx_paragraph_text(xml, "参加示例项目，承诺固定下划线文字。")
        texts = [t.text or "" for t in xml.iter(_w_tag("t"))]
        self.assertEqual(texts, ["参加", "示例项目", "", "，承诺", "固定下划线文字", "。"],
                         "字段应在原下划线run内替换，禁止整段压平")
        self.assertEqual(properties, [ET.tostring(r.find(_w_tag("rPr")))
                         if r.find(_w_tag("rPr")) is not None else None
                         for r in xml.iter(_w_tag("r"))])

    def test_deletion_numeric_update_and_non_text_nodes_survive(self):
        p = Document().add_paragraph("比例")
        p.add_run("15%").underline = True
        p.add_run("，包号：%%包号%%")
        p.add_run().add_break()
        p.add_run("签署：____").italic = True
        xml = ET.fromstring(p._p.xml)
        _fill_docx_paragraph_text(xml, "比例20%签署：____")
        self.assertEqual("".join(t.text or "" for t in xml.iter(_w_tag("t"))),
                         "比例20%签署：____")
        self.assertEqual(len(list(xml.iter(_w_tag("br")))), 1)
        underlined = [r for r in xml.iter(_w_tag("r"))
                      if r.find(_w_tag("rPr") + '/' + _w_tag("u")) is not None]
        self.assertEqual("".join(t.text or "" for r in underlined for t in r.iter(_w_tag("t"))), "20%")

    def test_native_chapter_docx_preserves_letter_and_cell_underlines(self):
        with tempfile.TemporaryDirectory() as directory:
            template = Document()
            template.add_paragraph("第一章 投标人资格、资信证明", style="Heading 1")
            template.add_paragraph("投标函")
            paragraphs = [template.add_paragraph(), template.add_table(rows=1, cols=1).cell(0, 0).paragraphs[0]]
            for p in paragraphs:
                p.add_run("参加")
                p.add_run("%%项目").underline = True
                p.add_run("名称%%").underline = True
                p.add_run("，编号：")
                p.add_run("%%项目编号%%").underline = WD_UNDERLINE.DOUBLE
                p.add_run("；签署：")
                p.add_run("    ").underline = True
                p.add_run("。")
            template.add_paragraph("第二章 报价", style="Heading 1")
            template_path = os.path.join(directory, "template.docx")
            template.save(template_path)
            path = _save_chapter_docx(
                Chapter(id="1", title="投标人资格、资信证明", template_chapter_id="1"),
                directory, template_path=template_path,
                placeholder_map={"项目名称": "示例项目", "项目编号": "TEST-001"},
            )
            result = Document(path)
            paragraphs = [next(p for p in result.paragraphs if p.text.startswith("参加")),
                          result.tables[0].cell(0, 0).paragraphs[0]]
            for p in paragraphs:
                self.assertEqual(p.text, "参加示例项目，编号：TEST-001；签署：    。")
                self.assertEqual([(r.text, r.underline) for r in p.runs if r.text], [
                    ("参加", None), ("示例项目", True), ("，编号：", None),
                    ("TEST-001", WD_UNDERLINE.DOUBLE), ("；签署：", None),
                    ("    ", True), ("。", None),
                ], "原生段落/单元格填充必须保留字段及签署空白下划线")


if __name__ == "__main__":
    unittest.main()