import type {
  Dispatch,
  SetStateAction,
} from 'react';

import type { StoryGenerationContext } from '../../services/aiTypes';
import { isRpgRuntimeServerFunctionId } from '../../services/rpg-runtime';
import {
  type Character,
  type Encounter,
  type GameState,
  type StoryMoment,
  type StoryOption,
} from '../../types';
import type { EscapePlaybackSync } from '../combat/escapeFlow';
import type { ResolvedChoiceState } from '../combat/resolvedChoice';
import type {
  CommitGeneratedStateWithEncounterEntry,
  GenerateStoryForState,
} from './progressionActions';
import { runLocalStoryChoiceContinuation } from './storyChoiceContinuation';
import {
  runCampTravelHomeChoice,
  runServerRuntimeChoiceAction,
  shouldOpenLocalRuntimeNpcModal,
} from './storyChoiceRuntime';
import type { BattleRewardSummary } from './uiTypes';

type RuntimeStatsIncrements = Partial<Pick<GameState['runtimeStats'], 'hostileNpcsDefeated' | 'questsAccepted' | 'itemsUsed' | 'scenesTraveled'>>;

type BuildFallbackStoryForState = (
  state: GameState,
  character: Character,
  fallbackText?: string,
) => StoryMoment;

type BuildStoryFromResponse = (
  state: GameState,
  character: Character,
  response: StoryMoment,
  availableOptions: StoryOption[] | null,
  optionCatalog?: StoryOption[] | null,
) => StoryMoment;

type BuildNpcStory = (
  state: GameState,
  character: Character,
  encounter: Encounter,
  overrideText?: string,
) => StoryMoment;

type HandleNpcBattleConversationContinuation = (params: {
  nextState: GameState;
  encounter: Encounter;
  character: Character;
  actionText: string;
  resultText: string;
  battleMode: NonNullable<GameState['currentNpcBattleMode']>;
}) => boolean;

type BuildStoryContextFromState = (
  state: GameState,
  extras?: {
    lastFunctionId?: string | null;
    observeSignsRequested?: boolean;
    recentActionResult?: string | null;
  },
) => StoryGenerationContext;

type UpdateQuestLog = (
  state: GameState,
  updater: (quests: GameState['quests']) => GameState['quests'],
) => GameState;

type IncrementRuntimeStats = (
  state: GameState,
  increments: RuntimeStatsIncrements,
) => GameState;

export function createStoryChoiceActions({
  gameState,
  currentStory,
  isLoading,
  setGameState,
  setCurrentStory,
  setAiError,
  setIsLoading,
  setBattleReward,
  buildResolvedChoiceState,
  playResolvedChoice,
  buildStoryContextFromState,
  buildStoryFromResponse,
  buildFallbackStoryForState,
  generateStoryForState,
  getAvailableOptionsForState,
  getStoryGenerationHostileNpcs,
  getResolvedSceneHostileNpcs,
  buildNpcStory,
  handleNpcBattleConversationContinuation,
  updateQuestLog,
  incrementRuntimeStats,
  getCampCompanionTravelScene,
  enterNpcInteraction,
  handleNpcInteraction,
  handleTreasureInteraction,
  commitGeneratedStateWithEncounterEntry,
  finalizeNpcBattleResult,
  isContinueAdventureOption,
  isCampTravelHomeOption,
  isRegularNpcEncounter,
  isNpcEncounter,
  npcPreviewTalkFunctionId,
  fallbackCompanionName,
  turnVisualMs,
}: {
  gameState: GameState;
  currentStory: StoryMoment | null;
  isLoading: boolean;
  setGameState: Dispatch<SetStateAction<GameState>>;
  setCurrentStory: Dispatch<SetStateAction<StoryMoment | null>>;
  setAiError: Dispatch<SetStateAction<string | null>>;
  setIsLoading: Dispatch<SetStateAction<boolean>>;
  setBattleReward: Dispatch<SetStateAction<BattleRewardSummary | null>>;
  buildResolvedChoiceState: (state: GameState, option: StoryOption, character: Character) => ResolvedChoiceState;
  playResolvedChoice: (
    state: GameState,
    option: StoryOption,
    character: Character,
    resolvedChoice: ResolvedChoiceState,
    sync?: EscapePlaybackSync,
  ) => Promise<GameState>;
  buildStoryContextFromState: BuildStoryContextFromState;
  buildStoryFromResponse: BuildStoryFromResponse;
  buildFallbackStoryForState: BuildFallbackStoryForState;
  generateStoryForState: GenerateStoryForState;
  getAvailableOptionsForState: (state: GameState, character: Character) => StoryOption[] | null;
  getStoryGenerationHostileNpcs: (state: GameState) => GameState['sceneHostileNpcs'];
  getResolvedSceneHostileNpcs: (state: GameState) => GameState['sceneHostileNpcs'];
  buildNpcStory: BuildNpcStory;
  handleNpcBattleConversationContinuation: HandleNpcBattleConversationContinuation;
  updateQuestLog: UpdateQuestLog;
  incrementRuntimeStats: IncrementRuntimeStats;
  getCampCompanionTravelScene: (state: GameState, character: Character) => GameState['currentScenePreset'] | null;
  enterNpcInteraction: (encounter: Encounter, actionText: string) => boolean;
  handleNpcInteraction: (option: StoryOption) => boolean | Promise<boolean>;
  handleTreasureInteraction: (
    option: StoryOption,
  ) => void | Promise<void> | boolean | Promise<boolean>;
  commitGeneratedStateWithEncounterEntry: CommitGeneratedStateWithEncounterEntry;
  finalizeNpcBattleResult: (
    state: GameState,
    character: Character,
    battleMode: NonNullable<GameState['currentNpcBattleMode']>,
    battleOutcome: GameState['currentNpcBattleOutcome'],
  ) => { nextState: GameState; resultText: string } | null;
  isContinueAdventureOption: (option: StoryOption) => boolean;
  isCampTravelHomeOption: (option: StoryOption) => boolean;
  isRegularNpcEncounter: (encounter: GameState['currentEncounter']) => encounter is Encounter;
  isNpcEncounter: (encounter: GameState['currentEncounter']) => encounter is Encounter;
  npcPreviewTalkFunctionId: string;
  fallbackCompanionName: string;
  turnVisualMs: number;
}) {
  const handleChoice = async (option: StoryOption) => {
    const character = gameState.playerCharacter;
    if (!gameState.worldType || !character || isLoading) return;
    if (option.disabled) return;

    if (currentStory?.deferredOptions?.length && isContinueAdventureOption(option)) {
      if (currentStory.deferredRuntimeState) {
        setGameState({
          ...gameState,
          currentEncounter: null,
          npcInteractionActive: false,
          sceneHostileNpcs: [],
          inBattle: false,
          currentBattleNpcId: null,
          currentNpcBattleMode: null,
          currentNpcBattleOutcome: null,
          currentScenePreset:
            currentStory.deferredRuntimeState.currentScenePreset ??
            gameState.currentScenePreset,
        });
      }
      setCurrentStory({
        ...currentStory,
        options: currentStory.deferredOptions,
        deferredOptions: undefined,
        deferredRuntimeState: undefined,
      });
      return;
    }

    if (isCampTravelHomeOption(option)) {
      await runCampTravelHomeChoice({
        gameState,
        option,
        character,
        setBattleReward,
        setAiError,
        setIsLoading,
        setGameState,
        incrementRuntimeStats,
        getCampCompanionTravelScene,
        commitGeneratedStateWithEncounterEntry,
        isNpcEncounter,
        fallbackCompanionName,
        turnVisualMs,
      });
      return;
    }

    if (shouldOpenLocalRuntimeNpcModal(option)) {
      setAiError(null);
      await handleNpcInteraction(option);
      return;
    }

    if (isRpgRuntimeServerFunctionId(option.functionId)) {
      await runServerRuntimeChoiceAction({
        gameState,
        currentStory,
        option,
        character,
        setBattleReward,
        setAiError,
        setIsLoading,
        setGameState,
        setCurrentStory: (story) => setCurrentStory(story),
        buildFallbackStoryForState,
        turnVisualMs,
      });
      return;
    }

    if (
      option.functionId === npcPreviewTalkFunctionId
      && isRegularNpcEncounter(gameState.currentEncounter)
      && !gameState.npcInteractionActive
    ) {
      setAiError(null);
      enterNpcInteraction(gameState.currentEncounter, option.actionText);
      return;
    }

    if (option.interaction?.kind === 'npc') {
      setAiError(null);
      await handleNpcInteraction(option);
      return;
    }

    if (option.interaction?.kind === 'treasure') {
      setAiError(null);
      await handleTreasureInteraction(option);
      return;
    }

    await runLocalStoryChoiceContinuation({
      gameState,
      currentStory,
      option,
      character,
      setGameState,
      setCurrentStory: (story) => setCurrentStory(story),
      setAiError,
      setIsLoading,
      setBattleReward,
      buildResolvedChoiceState,
      playResolvedChoice,
      buildStoryContextFromState,
      buildStoryFromResponse,
      buildFallbackStoryForState,
      generateStoryForState,
      getAvailableOptionsForState,
      getStoryGenerationHostileNpcs,
      getResolvedSceneHostileNpcs,
      buildNpcStory,
      handleNpcBattleConversationContinuation,
      updateQuestLog,
      incrementRuntimeStats,
      finalizeNpcBattleResult,
      isRegularNpcEncounter,
    });
  };

  return {
    handleChoice,
  };
}