"""
Unit tests for Quest data models.

Tests serialization, deserialization, and key model methods.
"""

import pytest
from app.models.quest import (
    Quest,
    QuestObjective,
    QuestReward,
    QuestOfferingTriggers,
    QuestOfferConditions,
    NPCOfferDialogue,
    QuestLoreContext,
    QuestDialogueTemplates,
    CharacterQuestState,
    QuestDifficulty,
    ObjectiveType,
    QuestStatus,
)


class TestQuestObjective:
    """Tests for QuestObjective dataclass."""

    def test_create_kill_objective(self):
        """Test creating a kill-type objective."""
        obj = QuestObjective(
            objective_id="kill_rats",
            description="Kill 10 giant rats",
            objective_type=ObjectiveType.KILL,
            required_progress=10,
            target_enemy_type="giant_rat",
        )

        assert obj.objective_id == "kill_rats"
        assert obj.objective_type == ObjectiveType.KILL
        assert obj.required_progress == 10
        assert not obj.is_complete
        assert obj.progress_text == "0/10"

    def test_objective_completion(self):
        """Test objective completion detection."""
        obj = QuestObjective(
            objective_id="collect_items",
            description="Collect 5 herbs",
            objective_type=ObjectiveType.COLLECT,
            required_progress=5,
            current_progress=5,
        )

        assert obj.is_complete

    def test_objective_serialization(self):
        """Test objective to_dict and from_dict."""
        obj = QuestObjective(
            objective_id="travel_town",
            description="Travel to the town",
            objective_type=ObjectiveType.TRAVEL,
            required_progress=1,
            target_location_id="crossville_village",
        )

        data = obj.to_dict()
        assert data["objective_id"] == "travel_town"
        assert data["objective_type"] == "travel"
        assert data["target_location_id"] == "crossville_village"

        restored = QuestObjective.from_dict(data)
        assert restored.objective_id == obj.objective_id
        assert restored.objective_type == obj.objective_type
        assert restored.target_location_id == obj.target_location_id


class TestQuestReward:
    """Tests for QuestReward dataclass."""

    def test_create_reward(self):
        """Test creating a quest reward."""
        reward = QuestReward(
            gold=100,
            experience=250,
            items=["sword_epic"],
            relationship_bonuses={"npc_grom": 10},
            unlocks_quests=["quest_sequel"],
        )

        assert reward.gold == 100
        assert reward.experience == 250
        assert "sword_epic" in reward.items
        assert reward.relationship_bonuses.get("npc_grom") == 10

    def test_reward_serialization(self):
        """Test reward to_dict and from_dict."""
        reward = QuestReward(gold=50, experience=100)
        data = reward.to_dict()

        restored = QuestReward.from_dict(data)
        assert restored.gold == 50
        assert restored.experience == 100


class TestQuestOfferingTriggers:
    """Tests for QuestOfferingTriggers dataclass."""

    def test_get_probability(self):
        """Test probability lookup by location type."""
        triggers = QuestOfferingTriggers(
            location_types=["tavern", "town"],
            probability_weights={"tavern": 0.35, "town": 0.25},
        )

        assert triggers.get_probability("tavern") == 0.35
        assert triggers.get_probability("town") == 0.25
        assert triggers.get_probability("wilderness") == 0.0  # Not defined

    def test_level_range(self):
        """Test level range settings."""
        triggers = QuestOfferingTriggers(
            min_character_level=5,
            max_character_level=15,
        )

        assert triggers.min_character_level == 5
        assert triggers.max_character_level == 15


class TestQuest:
    """Tests for Quest dataclass."""

    def test_create_quest(self):
        """Test creating a complete quest."""
        quest = Quest(
            quest_id="quest_test",
            name="Test Quest",
            description="A test quest",
            difficulty=QuestDifficulty.MEDIUM,
            quest_giver_npc_ids=["npc_test"],
            objectives=[
                QuestObjective(
                    objective_id="obj1",
                    description="Do something",
                    objective_type=ObjectiveType.KILL,
                    required_progress=5,
                )
            ],
            rewards=QuestReward(gold=100, experience=200),
        )

        assert quest.quest_id == "quest_test"
        assert quest.difficulty == QuestDifficulty.MEDIUM
        assert len(quest.objectives) == 1
        assert quest.rewards.gold == 100

    def test_can_npc_offer(self):
        """Test NPC can offer check."""
        quest = Quest(
            quest_id="quest_test",
            name="Test Quest",
            description="Test",
            difficulty=QuestDifficulty.EASY,
            quest_giver_npc_ids=["npc_grom", "npc_hilda"],
        )

        assert quest.can_npc_offer("npc_grom")
        assert quest.can_npc_offer("npc_hilda")
        assert not quest.can_npc_offer("npc_other")

    def test_get_offer_dialogue(self):
        """Test getting NPC-specific offer dialogue."""
        quest = Quest(
            quest_id="quest_test",
            name="Test Quest",
            description="Test",
            difficulty=QuestDifficulty.EASY,
            quest_giver_npc_ids=["npc_grom"],
            npc_offer_dialogues={
                "npc_grom": NPCOfferDialogue(
                    dialogue="Got a problem, friend.",
                    conditions=QuestOfferConditions(min_relationship=30),
                )
            },
        )

        assert quest.get_offer_dialogue("npc_grom") == "Got a problem, friend."
        assert quest.get_offer_dialogue("npc_other") == ""

    def test_get_offer_conditions(self):
        """Test getting NPC-specific offer conditions."""
        quest = Quest(
            quest_id="quest_test",
            name="Test Quest",
            description="Test",
            difficulty=QuestDifficulty.EASY,
            quest_giver_npc_ids=["npc_grom"],
            npc_offer_dialogues={
                "npc_grom": NPCOfferDialogue(
                    dialogue="Test",
                    conditions=QuestOfferConditions(
                        min_relationship=50,
                        required_flags=["helped_before"],
                    ),
                )
            },
        )

        conditions = quest.get_offer_conditions("npc_grom")
        assert conditions.min_relationship == 50
        assert "helped_before" in conditions.required_flags

        # Non-existent NPC should return default conditions
        default_conditions = quest.get_offer_conditions("npc_other")
        assert default_conditions.min_relationship == 0

    def test_quest_completion(self):
        """Test quest completion detection."""
        quest = Quest(
            quest_id="quest_test",
            name="Test Quest",
            description="Test",
            difficulty=QuestDifficulty.EASY,
            quest_giver_npc_ids=["npc_test"],
            objectives=[
                QuestObjective(
                    objective_id="obj1",
                    description="Task 1",
                    objective_type=ObjectiveType.KILL,
                    required_progress=5,
                    current_progress=5,
                ),
                QuestObjective(
                    objective_id="obj2",
                    description="Task 2",
                    objective_type=ObjectiveType.TRAVEL,
                    required_progress=1,
                    current_progress=1,
                ),
            ],
        )

        assert quest.is_complete

    def test_quest_not_complete(self):
        """Test quest incomplete when objectives remain."""
        quest = Quest(
            quest_id="quest_test",
            name="Test Quest",
            description="Test",
            difficulty=QuestDifficulty.EASY,
            quest_giver_npc_ids=["npc_test"],
            objectives=[
                QuestObjective(
                    objective_id="obj1",
                    description="Task 1",
                    objective_type=ObjectiveType.KILL,
                    required_progress=5,
                    current_progress=5,
                ),
                QuestObjective(
                    objective_id="obj2",
                    description="Task 2",
                    objective_type=ObjectiveType.TRAVEL,
                    required_progress=1,
                    current_progress=0,  # Not complete
                ),
            ],
        )

        assert not quest.is_complete

    def test_quest_serialization(self):
        """Test quest to_dict and from_dict."""
        quest = Quest(
            quest_id="quest_test",
            name="Test Quest",
            description="A test description",
            difficulty=QuestDifficulty.HARD,
            quest_giver_npc_ids=["npc_grom"],
            quest_giver_name="Grom",
            location_id="crossville_tavern",
            region_id="crossville",
            objectives=[
                QuestObjective(
                    objective_id="kill_rats",
                    description="Kill 10 rats",
                    objective_type=ObjectiveType.KILL,
                    required_progress=10,
                )
            ],
            rewards=QuestReward(gold=50, experience=100),
            lore_context=QuestLoreContext(
                backstory="Long ago...",
                world_connections=["Connected to main story"],
            ),
            dialogue_templates=QuestDialogueTemplates(
                narrative_hooks=["mentions rats", "looks nervous"],
            ),
            tags=["combat", "starter"],
        )

        data = quest.to_dict()
        assert data["quest_id"] == "quest_test"
        assert data["difficulty"] == "hard"
        assert len(data["objectives"]) == 1
        assert data["rewards"]["gold"] == 50
        assert data["lore_context"]["backstory"] == "Long ago..."

        restored = Quest.from_dict(data)
        assert restored.quest_id == quest.quest_id
        assert restored.difficulty == quest.difficulty
        assert restored.rewards.gold == quest.rewards.gold
        assert restored.lore_context.backstory == quest.lore_context.backstory

    def test_to_offer_dict(self):
        """Test quest to_offer_dict for UI display."""
        quest = Quest(
            quest_id="quest_test",
            name="Test Quest",
            description="Test description",
            difficulty=QuestDifficulty.EASY,
            quest_giver_npc_ids=["npc_grom"],
            quest_giver_name="Grom",
            objectives=[
                QuestObjective(
                    objective_id="obj1",
                    description="Do something",
                    objective_type=ObjectiveType.KILL,
                    required_progress=5,
                )
            ],
            rewards=QuestReward(gold=50, experience=100),
        )

        offer_data = quest.to_offer_dict()
        assert offer_data["quest_id"] == "quest_test"
        assert offer_data["name"] == "Test Quest"
        assert offer_data["difficulty"] == "easy"
        assert offer_data["rewards"]["gold"] == 50
        assert len(offer_data["objectives"]) == 1


class TestCharacterQuestState:
    """Tests for CharacterQuestState dataclass."""

    def test_create_quest_state(self):
        """Test creating a quest state."""
        state = CharacterQuestState(
            quest_id="quest_test",
            status=QuestStatus.ACTIVE,
            accepted_at="2025-01-15T10:00:00Z",
            objectives_progress={"obj1": 3, "obj2": 0},
        )

        assert state.quest_id == "quest_test"
        assert state.status == QuestStatus.ACTIVE
        assert state.get_progress("obj1") == 3
        assert state.get_progress("obj2") == 0
        assert state.get_progress("obj3") == 0  # Non-existent

    def test_update_progress(self):
        """Test updating objective progress."""
        state = CharacterQuestState(
            quest_id="quest_test",
            objectives_progress={"obj1": 0},
        )

        state.update_progress("obj1", 5)
        assert state.get_progress("obj1") == 5

        state.update_progress("obj1", 3)
        assert state.get_progress("obj1") == 8

    def test_quest_state_serialization(self):
        """Test quest state to_dict and from_dict."""
        state = CharacterQuestState(
            quest_id="quest_test",
            status=QuestStatus.COMPLETED,
            accepted_at="2025-01-15T10:00:00Z",
            completed_at="2025-01-16T14:30:00Z",
            objectives_progress={"obj1": 10},
        )

        data = state.to_dict()
        assert data["quest_id"] == "quest_test"
        assert data["status"] == "completed"
        assert data["completed_at"] == "2025-01-16T14:30:00Z"

        restored = CharacterQuestState.from_dict(data)
        assert restored.quest_id == state.quest_id
        assert restored.status == state.status
        assert restored.completed_at == state.completed_at