from pathlib import Path

import textwrap

import pytest

from automation.config import RulesConfig
from automation.patcher import ModelConfig
from automation.runner import process

from tests.test_patcher import run as run_git


@pytest.fixture()
def repo(tmp_path: Path) -> Path:
    repo = tmp_path / "repo"
    repo.mkdir()
    run_git(["git", "init"], cwd=repo)
    run_git(["git", "config", "user.email", "dev@example.com"], cwd=repo)
    run_git(["git", "config", "user.name", "Dev"], cwd=repo)

    (repo / "Docs/features/FR_1/discussions").mkdir(parents=True, exist_ok=True)
    (repo / "Docs/features/FR_1/discussions/example.discussion.md").write_text("- Note\n", encoding="utf-8")
    run_git(["git", "add", "Docs/features/FR_1/discussions/example.discussion.md"], cwd=repo)

    (repo / ".ai-rules.yml").write_text(
        textwrap.dedent(
            """
            file_associations:
              example.discussion.md: discussion_rule
            rules:
              discussion_rule:
                outputs:
                  summary:
                    path: "Docs/features/FR_1/discussions/example.discussion.sum.md"
                    instruction: "Create summary"
            """
        ).strip()
        + "\n",
        encoding="utf-8",
    )

    return repo


def test_process_generates_output(repo: Path, tmp_path: Path) -> None:
    patch_text = """<<<AI_DIFF_START>>>
diff --git a/Docs/features/FR_1/discussions/example.discussion.sum.md b/Docs/features/FR_1/discussions/example.discussion.sum.md
--- /dev/null
+++ b/Docs/features/FR_1/discussions/example.discussion.sum.md
@@ -0,0 +1,2 @@
+Summary line
+Another line
<<<AI_DIFF_END>>>
"""
    patch_file = tmp_path / "patch.txt"
    patch_file.write_text(patch_text, encoding="utf-8")

    rules = RulesConfig.load(repo)
    model = ModelConfig(f"bash -lc 'cat {patch_file.as_posix()}'")

    rc = process(repo, rules, model)
    assert rc == 0

    output_file = repo / "Docs/features/FR_1/discussions/example.discussion.sum.md"
    assert output_file.exists()
    assert output_file.read_text(encoding="utf-8") == "Summary line\nAnother line\n"