#!/usr/bin/env python3
"""范式规划期绑定读取回归：load_confirmed_pattern_bindings（桩连接，不连真库）。

实验仓承载：绑定 = 最新一条已确认 assembly 规划行的 patternReferences。
确认 assembly 即激活绑定；无已确认 assembly 或没选范式时诚实返空（不报错）。
"""

import pathlib
import sys
import unittest

PROJECT_ROOT = pathlib.Path(__file__).resolve().parents[3]
SCRIPT_DIR = PROJECT_ROOT / "muse" / "lifecycle" / "context" / "skills" / "准备任务上下文" / "scripts"
sys.path.insert(0, str(SCRIPT_DIR))

from retrieve_writer_sources import load_confirmed_pattern_bindings  # noqa: E402


class FakeCursor:
    def __init__(self, row):
        self._row = row

    def fetchone(self):
        return self._row


class FakeConn:
    def __init__(self, row):
        self._row = row
        self.sql = None
        self.params = None

    def execute(self, sql, params=None):
        self.sql = sql
        self.params = params
        return FakeCursor(self._row)


def assembly_payload(refs):
    return {"schemaVersion": "assembly-v1", "workId": 12,
            "patternReferences": refs, "knowledgeBindings": []}


class PatternBindingReaderTest(unittest.TestCase):
    def test_returns_confirmed_assembly_pattern_references(self):
        refs = [{"sourceId": "card:1", "sourceVersion": "v1", "name": "锁空坠杀"},
                {"sourceId": "card:2", "sourceVersion": "v1", "name": "碎颅"}]
        conn = FakeConn((assembly_payload(refs),))
        result = load_confirmed_pattern_bindings(conn, work_id=12)
        self.assertEqual(result, refs)
        self.assertIn("section_type='assembly'", conn.sql)
        self.assertIn("state='confirmed'", conn.sql)
        self.assertIn("ORDER BY version DESC LIMIT 1", conn.sql)
        self.assertEqual(conn.params, (12,))

    def test_no_confirmed_assembly_returns_empty(self):
        conn = FakeConn(None)
        self.assertEqual(load_confirmed_pattern_bindings(conn, work_id=12), [])

    def test_jsonb_as_string_is_parsed(self):
        conn = FakeConn(('{"patternReferences": [{"sourceId": "card:9", "name": "x"}]}',))
        result = load_confirmed_pattern_bindings(conn, work_id=12)
        self.assertEqual(result, [{"sourceId": "card:9", "name": "x"}])

    def test_empty_selection_returns_empty(self):
        conn = FakeConn((assembly_payload([]),))
        self.assertEqual(load_confirmed_pattern_bindings(conn, work_id=12), [])

    def test_non_dict_references_are_filtered(self):
        conn = FakeConn((assembly_payload([{"sourceId": "card:1"}, "bad", 42, None]),))
        self.assertEqual(load_confirmed_pattern_bindings(conn, work_id=12),
                         [{"sourceId": "card:1"}])


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