"""
Deep behavioral tests for news item construction patterns.
Tests the news_item dict construction from api.py, ID formatting,
default values, and field mapping.
"""

from datetime import datetime, timezone


# --- News item ID format ---


class TestNewsItemIdFormat:
    """Tests for the news-{research_id} ID format from api.py:387."""

    def test_prefix_format(self):
        research_id = "abc-123"
        news_id = f"news-{research_id}"
        assert news_id == "news-abc-123"

    def test_uuid_id(self):
        research_id = "550e8400-e29b-41d4-a716-446655440000"
        news_id = f"news-{research_id}"
        assert news_id.startswith("news-")

    def test_numeric_id(self):
        research_id = "42"
        news_id = f"news-{research_id}"
        assert news_id == "news-42"


# --- Default values ---


class TestNewsItemDefaults:
    """Tests for news item default values from api.py:386-418."""

    def test_default_impact_score(self):
        metadata = {}
        impact_score = metadata.get("impact_score", 0)
        assert impact_score == 0

    def test_metadata_impact_score(self):
        metadata = {"impact_score": 7}
        impact_score = metadata.get("impact_score", 0)
        assert impact_score == 7

    def test_default_upvotes(self):
        metadata = {}
        upvotes = metadata.get("upvotes", 0)
        assert upvotes == 0

    def test_default_downvotes(self):
        metadata = {}
        downvotes = metadata.get("downvotes", 0)
        assert downvotes == 0

    def test_default_priority(self):
        metadata = {}
        priority = metadata.get("priority", "normal")
        assert priority == "normal"

    def test_custom_priority(self):
        metadata = {"priority": "high"}
        priority = metadata.get("priority", "normal")
        assert priority == "high"

    def test_default_is_news(self):
        metadata = {}
        is_news = metadata.get("is_news_search", False)
        assert is_news is False

    def test_is_news_true(self):
        metadata = {"is_news_search": True}
        is_news = metadata.get("is_news_search", False)
        assert is_news is True

    def test_news_date_none(self):
        metadata = {}
        news_date = metadata.get("news_date")
        assert news_date is None

    def test_news_source_none(self):
        metadata = {}
        news_source = metadata.get("news_source")
        assert news_source is None


# --- source_url format ---


class TestSourceUrlFormat:
    """Tests for source_url construction from api.py:399."""

    def test_source_url_format(self):
        research_id = "abc-123"
        source_url = f"/results/{research_id}"
        assert source_url == "/results/abc-123"

    def test_source_url_with_uuid(self):
        research_id = "550e8400-e29b-41d4-a716-446655440000"
        source_url = f"/results/{research_id}"
        assert source_url.startswith("/results/")


# --- Summary fallback ---


class TestSummaryFallback:
    """Tests for summary fallback logic from api.py:391."""

    def test_summary_used_when_available(self):
        summary = "This is a summary"
        headline = "Test Headline"
        result = summary or f"Research analysis for: {headline[:100]}"
        assert result == "This is a summary"

    def test_headline_fallback(self):
        summary = ""
        headline = "Test Headline"
        result = summary or f"Research analysis for: {headline[:100]}"
        assert result == "Research analysis for: Test Headline"

    def test_headline_truncated_at_100(self):
        summary = ""
        headline = "A" * 200
        result = summary or f"Research analysis for: {headline[:100]}"
        assert len(result) == len("Research analysis for: ") + 100

    def test_none_summary_triggers_fallback(self):
        summary = None
        headline = "Test"
        result = summary or f"Research analysis for: {headline[:100]}"
        assert result.startswith("Research analysis for:")


# --- News feed response structure ---


class TestNewsFeedResponse:
    """Tests for the news feed response structure from api.py:467-474."""

    def test_response_has_news_items(self):
        response = {
            "news_items": [],
            "generated_at": datetime.now(timezone.utc).isoformat(),
            "focus": None,
            "search_strategy": "default",
            "total_items": 0,
            "source": "research_history",
        }
        assert "news_items" in response

    def test_response_has_generated_at(self):
        response = {
            "news_items": [],
            "generated_at": datetime.now(timezone.utc).isoformat(),
            "focus": None,
            "search_strategy": "default",
            "total_items": 0,
            "source": "research_history",
        }
        assert "generated_at" in response
        assert "T" in response["generated_at"]

    def test_response_has_focus(self):
        response = {
            "news_items": [],
            "generated_at": datetime.now(timezone.utc).isoformat(),
            "focus": "technology",
            "search_strategy": "default",
            "total_items": 0,
            "source": "research_history",
        }
        assert response["focus"] == "technology"

    def test_response_default_strategy(self):
        search_strategy = None
        response_strategy = search_strategy or "default"
        assert response_strategy == "default"

    def test_response_custom_strategy(self):
        search_strategy = "news_aggregation"
        response_strategy = search_strategy or "default"
        assert response_strategy == "news_aggregation"

    def test_news_items_limited(self):
        items = list(range(50))
        limit = 20
        result = items[:limit]
        assert len(result) == 20


# --- Limit validation ---


class TestLimitValidation:
    """Tests for the limit validation pattern from api.py:109-111."""

    def test_zero_limit_invalid(self):
        limit = 0
        assert limit < 1

    def test_negative_limit_invalid(self):
        limit = -5
        assert limit < 1

    def test_one_limit_valid(self):
        limit = 1
        assert limit >= 1

    def test_large_limit_valid(self):
        limit = 1000
        assert limit >= 1


# --- Subscription dict format ---


class TestSubscriptionDictFormat:
    """Tests for subscription dict construction patterns from api.py:731-754."""

    def test_search_iterations_default(self):
        search_iterations = None
        result = search_iterations or 3
        assert result == 3

    def test_search_iterations_custom(self):
        search_iterations = 5
        result = search_iterations or 3
        assert result == 5

    def test_questions_per_iteration_default(self):
        questions = None
        result = questions or 5
        assert result == 5

    def test_questions_per_iteration_custom(self):
        questions = 10
        result = questions or 5
        assert result == 10

    def test_is_active_from_status(self):
        status = "active"
        is_active = status == "active"
        assert is_active is True

    def test_is_active_from_paused(self):
        status = "paused"
        is_active = status == "active"
        assert is_active is False

    def test_is_active_from_expired(self):
        status = "expired"
        is_active = status == "active"
        assert is_active is False


# --- History item processing ---


class TestHistoryItemProcessing:
    """Tests for history item processing from api.py:630-659."""

    def _process_item(self, item):
        """Reproduce history item processing from api.py."""
        processed = {
            "research_id": item.get("uuid_id") or str(item.get("id")),
            "query": item["query"],
            "status": item["status"],
            "created_at": item["created_at"],
            "completed_at": item.get("completed_at"),
            "duration_seconds": item.get("duration_seconds", 0),
            "url": f"/progress/{item.get('uuid_id') or item.get('id')}",
        }
        return processed

    def test_uses_uuid_id(self):
        item = {
            "uuid_id": "uuid-1",
            "id": 42,
            "query": "test",
            "status": "completed",
            "created_at": "2025-01-01",
        }
        result = self._process_item(item)
        assert result["research_id"] == "uuid-1"

    def test_falls_back_to_id(self):
        item = {
            "uuid_id": None,
            "id": 42,
            "query": "test",
            "status": "completed",
            "created_at": "2025-01-01",
        }
        result = self._process_item(item)
        assert result["research_id"] == "42"

    def test_url_format(self):
        item = {
            "uuid_id": "uuid-1",
            "id": 42,
            "query": "test",
            "status": "completed",
            "created_at": "2025-01-01",
        }
        result = self._process_item(item)
        assert result["url"] == "/progress/uuid-1"

    def test_default_duration(self):
        item = {
            "uuid_id": "uuid-1",
            "id": 42,
            "query": "test",
            "status": "completed",
            "created_at": "2025-01-01",
        }
        result = self._process_item(item)
        assert result["duration_seconds"] == 0

    def test_custom_duration(self):
        item = {
            "uuid_id": "uuid-1",
            "id": 42,
            "query": "test",
            "status": "completed",
            "created_at": "2025-01-01",
            "duration_seconds": 120,
        }
        result = self._process_item(item)
        assert result["duration_seconds"] == 120

    def test_completed_at_none(self):
        item = {
            "uuid_id": "uuid-1",
            "id": 42,
            "query": "test",
            "status": "in_progress",
            "created_at": "2025-01-01",
        }
        result = self._process_item(item)
        assert result["completed_at"] is None


# --- Metadata headline/topics extraction from history ---


class TestMetadataHeadlineTopicsExtraction:
    """Tests for headline/topics extraction from research_meta in history items."""

    def _extract_headline_topics(self, research_meta):
        """Reproduce extraction from api.py:641-657."""
        import json

        if research_meta:
            try:
                meta = json.loads(research_meta)
                return {
                    "triggered_by": meta.get("triggered_by", "subscription"),
                    "headline": meta.get("generated_headline", "[No headline]"),
                    "topics": meta.get("generated_topics", []),
                }
            except Exception:
                return {
                    "headline": "[No headline]",
                    "topics": [],
                }
        return {
            "headline": "[No headline]",
            "topics": [],
        }

    def test_extracts_headline(self):
        import json

        meta = json.dumps({"generated_headline": "Breaking News"})
        result = self._extract_headline_topics(meta)
        assert result["headline"] == "Breaking News"

    def test_extracts_topics(self):
        import json

        meta = json.dumps({"generated_topics": ["AI", "Tech"]})
        result = self._extract_headline_topics(meta)
        assert result["topics"] == ["AI", "Tech"]

    def test_default_headline(self):
        import json

        meta = json.dumps({})
        result = self._extract_headline_topics(meta)
        assert result["headline"] == "[No headline]"

    def test_default_topics(self):
        import json

        meta = json.dumps({})
        result = self._extract_headline_topics(meta)
        assert result["topics"] == []

    def test_triggered_by_default(self):
        import json

        meta = json.dumps({})
        result = self._extract_headline_topics(meta)
        assert result["triggered_by"] == "subscription"

    def test_triggered_by_custom(self):
        import json

        meta = json.dumps({"triggered_by": "manual"})
        result = self._extract_headline_topics(meta)
        assert result["triggered_by"] == "manual"

    def test_none_meta(self):
        result = self._extract_headline_topics(None)
        assert result["headline"] == "[No headline]"

    def test_empty_meta(self):
        result = self._extract_headline_topics("")
        assert result["headline"] == "[No headline]"

    def test_invalid_json(self):
        result = self._extract_headline_topics("not json")
        assert result["headline"] == "[No headline]"


# --- Like pattern construction ---


class TestLikePatternConstruction:
    """Tests for LIKE pattern construction from api.py:789."""

    def test_subscription_id_pattern(self):
        sub_id = "sub-123-abc"
        pattern = f'%"subscription_id": "{sub_id}"%'
        assert '"subscription_id": "sub-123-abc"' in pattern
        assert pattern.startswith("%")
        assert pattern.endswith("%")

    def test_pattern_with_uuid(self):
        sub_id = "550e8400-e29b-41d4-a716-446655440000"
        pattern = f'%"subscription_id": "{sub_id}"%'
        assert sub_id in pattern

    def test_pattern_matches_json(self):
        import json

        sub_id = "sub-123"
        pattern_content = f'"subscription_id": "{sub_id}"'
        json_str = json.dumps(
            {"subscription_id": sub_id, "other": "data"}, indent=None
        )
        # json.dumps with no indent uses ": " separator
        assert pattern_content in json_str
