from unittest.mock import patch, MagicMock
from src.markdown_table import render_table, TableBlock

def _setup_mocks(mock_imgui):
 mock_imgui.TableFlags_ = type("T", (), {"borders": 1, "row_bg": 2, "resizable": 4})()
 mock_imgui.TableColumnFlags_ = type("C", (), {"width_stretch": 8, "width_fixed": 16})()
 mock_imgui.begin_table.return_value = True
 mock_imgui.table_next_column = MagicMock()
 mock_imgui.table_next_row = MagicMock()
 mock_imgui.table_headers_row = MagicMock()
 mock_imgui.text_wrapped = MagicMock()
 mock_imgui.text = MagicMock()
 mock_imgui.end_table = MagicMock()

def _setup_md_mocks():
 from src.markdown_table import imgui_md as md_mod
 md_mod.render = MagicMock()

def test_render_table_routes_cell_content_through_imgui_md():
 block = TableBlock(headers=["A"], rows=[["hello"]], span=(0, 2))
 with patch("src.markdown_table.imgui") as mock_imgui, \
      patch("src.markdown_table.imgui_md") as mock_md:
  _setup_mocks(mock_imgui)
  _setup_md_mocks()
  render_table(block)
  mock_md.render.assert_any_call("hello"), "cell content must be routed through imgui_md.render (so MD4C strips backticks and handles inline emphasis)"

def test_render_table_uses_table_headers_row_for_headers():
 block = TableBlock(headers=["A"], rows=[["hello"]], span=(0, 2))
 with patch("src.markdown_table.imgui") as mock_imgui, \
      patch("src.markdown_table.imgui_md") as mock_md:
  _setup_mocks(mock_imgui)
  _setup_md_mocks()
  render_table(block)
  assert mock_imgui.table_headers_row.called, "table_headers_row must be called exactly once to render the header row"
  assert mock_imgui.table_headers_row.call_count == 1, f"table_headers_row must be called exactly once (not {mock_imgui.table_headers_row.call_count} — would cause double-header bug)"

def test_render_table_does_not_use_text_for_cells():
 block = TableBlock(headers=["A"], rows=[["hello"]], span=(0, 2))
 with patch("src.markdown_table.imgui") as mock_imgui, \
      patch("src.markdown_table.imgui_md") as mock_md:
  _setup_mocks(mock_imgui)
  _setup_md_mocks()
  render_table(block)
  assert not mock_imgui.text.called, "imgui.text should not be called for table cells"

def test_render_table_uses_width_stretch_for_columns():
 block = TableBlock(headers=["A", "B"], rows=[["1", "2"]], span=(0, 3))
 with patch("src.markdown_table.imgui") as mock_imgui, \
      patch("src.markdown_table.imgui_md") as mock_md:
  _setup_mocks(mock_imgui)
  _setup_md_mocks()
  render_table(block)
  assert mock_imgui.table_setup_column.call_count == 2
  for call in mock_imgui.table_setup_column.call_args_list:
   args, _ = call
   assert imgui_flags_passed(args), f"table_setup_column must include width_stretch flag, got args={args}"

def imgui_flags_passed(args) -> bool:
 if len(args) < 2: return False
 return bool(args[1] & 8)

def test_render_table_routes_every_cell_through_imgui_md():
 block = TableBlock(headers=["A", "B"], rows=[["1", "2"], ["3", "4"], ["5", "6"]], span=(0, 5))
 with patch("src.markdown_table.imgui") as mock_imgui, \
      patch("src.markdown_table.imgui_md") as mock_md:
  _setup_mocks(mock_imgui)
  _setup_md_mocks()
  render_table(block)
  cell_count = 6
  assert mock_md.render.call_count == cell_count, f"imgui_md.render must be called exactly {cell_count} times (one per cell, not headers), got {mock_md.render.call_count}"