"""Ingest sweep + cursor tests (T06)."""

import json
import os
import sys

sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))

from session_memory.core.cursor import Cursors  # noqa: E402
from session_memory.ingest import run_sweep  # noqa: E402


def test_cursor_change_detection(tmp_path):
    f = tmp_path / "a.jsonl"
    f.write_text("{}\n")
    cur = Cursors(str(tmp_path / "cur.json"))
    assert cur.is_changed(str(f)) is True
    cur.mark(str(f))
    assert cur.is_changed(str(f)) is False
    f.write_text("{}\n{}\n")  # grow
    assert cur.is_changed(str(f)) is True


def _claude_session_file(dir_path, native):
    os.makedirs(dir_path, exist_ok=True)
    p = os.path.join(dir_path, f"{native}.jsonl")
    recs = [
        {"type": "user", "uuid": "u1", "sessionId": native,
         "timestamp": "2026-06-06T10:00:00Z", "cwd": "/home/worsch/agentic-resources",
         "gitBranch": "main", "message": {"role": "user", "content": "hi"}},
        {"type": "assistant", "uuid": "a1", "parentUuid": "u1", "sessionId": native,
         "timestamp": "2026-06-06T10:00:02Z",
         "message": {"role": "assistant", "model": "claude-opus-4-8",
                     "usage": {"input_tokens": 5, "output_tokens": 2},
                     "content": [{"type": "text", "text": "hello"}]}},
    ]
    with open(p, "w", encoding="utf-8") as f:
        for r in recs:
            f.write(json.dumps(r) + "\n")
    return p


def _config(tmp_path, projects_dir):
    return {
        "store": {
            "db_path": str(tmp_path / ".store/mem.db"),
            "blob_dir": str(tmp_path / ".store/blobs"),
            "cursor": str(tmp_path / ".store/cursors.json"),
        },
        "retention": {"raw_soft_cap_bytes": 10**12, "raw_hard_cap_bytes": 10**12,
                      "raw_max_age_days": 10**6, "distilled_cap_bytes": 10**12},
        "sources": {"claude": {"enabled": True, "root": str(projects_dir), "glob": "*/*.jsonl"}},
        "repo_domain_map": {"agentic-resources": "helix_forge"},
    }


def test_run_sweep_end_to_end(tmp_path):
    projects = tmp_path / "projects"
    _claude_session_file(str(projects / "-home-worsch-agentic-resources"), "sess-aaa")
    cfg = _config(tmp_path, projects)

    res = run_sweep(cfg)
    assert res.discovered == 1
    assert res.ingested == 1
    assert res.analyzed == 1
    assert res.retention is not None

    # re-run: cursor skips the unchanged file (idempotent, cheap)
    res2 = run_sweep(cfg)
    assert res2.skipped_unchanged == 1
    assert res2.ingested == 0


def test_dry_run_writes_nothing(tmp_path):
    projects = tmp_path / "projects"
    _claude_session_file(str(projects / "-home-worsch-agentic-resources"), "sess-bbb")
    cfg = _config(tmp_path, projects)
    res = run_sweep(cfg, dry_run=True)
    assert res.discovered == 1 and res.ingested == 1
    assert res.retention is None
    assert not os.path.exists(cfg["store"]["db_path"])  # no store created