package com.emotion.controller;

import com.emotion.common.PageResult;
import com.emotion.common.Result;
import com.emotion.dto.request.EpicScriptCreateRequest;
import com.emotion.dto.request.EpicScriptCreateWithDialogueRequest;
import com.emotion.dto.request.EpicScriptInspirationRequest;
import com.emotion.dto.request.EpicScriptPageRequest;
import com.emotion.dto.request.EpicScriptUpdateRequest;
import com.emotion.dto.request.SwitchVersionRequest;
import com.emotion.dto.response.EpicScriptCreateWithDialogueResponse;
import com.emotion.dto.response.EpicScriptInspirationResponse;
import com.emotion.dto.response.EpicScriptResponse;
import com.emotion.dto.response.InspirationSuggestionResponse;
import com.emotion.service.EpicScriptDialogueService;
import com.emotion.service.EpicScriptService;
import io.swagger.v3.oas.annotations.Operation;
import io.swagger.v3.oas.annotations.Parameter;
import io.swagger.v3.oas.annotations.tags.Tag;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.*;

import javax.validation.Valid;
import java.util.List;

/**
 * 爽文剧本控制器
 *
 * @author huazhongmin
 * @date 2025-12-22
 */
@RestController
@RequestMapping("/epicScript")
@Tag(name = "爽文剧本管理", description = "爽文剧本的查询、创建、更新、删除和灵感推荐接口")
public class EpicScriptController {

    @Autowired
    private EpicScriptService epicScriptService;

    @Autowired
    private EpicScriptDialogueService epicScriptDialogueService;

    /**
     * 分页查询当前用户的爽文剧本
     */
    @Operation(summary = "分页查询爽文剧本", description = "分页查询当前用户的爽文剧本列表。")
    @GetMapping(value = "/page")
    public Result<PageResult<EpicScriptResponse>> getPage(@Validated EpicScriptPageRequest request) {
        PageResult<EpicScriptResponse> pageResult = epicScriptService.getPageByCurrentUser(request);
        return Result.success(pageResult);
    }

    /**
     * 获取当前用户的所有爽文剧本列表
     */
    @Operation(summary = "获取爽文剧本列表", description = "获取当前用户的所有爽文剧本列表。")
    @GetMapping(value = "/listAll")
    public Result<List<EpicScriptResponse>> getList() {
        List<EpicScriptResponse> scripts = epicScriptService.getListByCurrentUser();
        return Result.success(scripts);
    }

    @Operation(summary = "获取灵感推荐", description = "获取系统推荐的灵感建议列表。")
    @GetMapping(value = "/inspiration/recommendations")
    public Result<List<InspirationSuggestionResponse>> getInspirationRecommendations() {
        return Result.success(epicScriptService.getInspirationRecommendations());
    }

    @Operation(summary = "获取随机灵感", description = "随机获取指定数量的灵感建议。")
    @GetMapping(value = "/inspiration/random")
    public Result<List<InspirationSuggestionResponse>> getRandomInspirations(
            @Parameter(description = "灵感数量") @RequestParam(required = false, defaultValue = "3") Integer size) {
        return Result.success(epicScriptService.getRandomInspirations(size));
    }

    @Operation(summary = "从灵感生成剧本", description = "基于选定的灵感建议生成爽文剧本。")
    @PostMapping(value = "/inspiration/generate")
    public Result<EpicScriptInspirationResponse> generateFromInspiration(
            @Valid @RequestBody EpicScriptInspirationRequest request) {
        EpicScriptInspirationResponse response;
        try {
            response = epicScriptService.generateFromInspiration(request);
        } catch (IllegalStateException e) {
            return Result.error(e.getMessage());
        }
        if (response == null) {
            return Result.error("灵感剧本生成失败");
        }
        return Result.success(response);
    }

    /**
     * 根据ID获取爽文剧本详情
     */
    @Operation(summary = "获取剧本详情", description = "根据 ID 获取爽文剧本的详细信息。")
    @GetMapping(value = "/detail")
    public Result<EpicScriptResponse> getById(@Parameter(description = "剧本 ID") @RequestParam String id) {
        EpicScriptResponse script = epicScriptService.getScriptById(id);
        if (script == null) {
            return Result.notFound("爽文剧本不存在");
        }
        return Result.success(script);
    }

    /**
     * 创建爽文剧本
     */
    @Operation(summary = "创建爽文剧本", description = "创建一个新的爽文剧本。")
    @PostMapping(value = "/create")
    public Result<EpicScriptResponse> create(@Valid @RequestBody EpicScriptCreateRequest request) {
        EpicScriptResponse script = epicScriptService.createScript(request);
        if (script == null) {
            return Result.error("创建失败");
        }
        return Result.success(script);
    }

    @Operation(summary = "创建剧本并创建对话", description = "用户输入心愿后，创建剧本、创建对话并生成第一条 AI 剧本消息。")
    @PostMapping(value = "/createWithDialogue")
    public Result<EpicScriptCreateWithDialogueResponse> createWithDialogue(
            @Valid @RequestBody EpicScriptCreateWithDialogueRequest request) {
        EpicScriptCreateWithDialogueResponse response = epicScriptDialogueService.createWithDialogue(request);
        return Result.success(response);
    }

    /**
     * 更新爽文剧本
     */
    @Operation(summary = "更新爽文剧本", description = "修改已有爽文剧本的内容。")
    @PutMapping(value = "/update")
    public Result<EpicScriptResponse> update(@Valid @RequestBody EpicScriptUpdateRequest request) {
        EpicScriptResponse script = epicScriptService.updateScript(request);
        if (script == null) {
            return Result.error("更新失败");
        }
        return Result.success(script);
    }

    /**
     * 选中剧本（取消其他选中状态）
     */
    @Operation(summary = "选中剧本", description = "选中指定剧本并取消其他剧本的选中状态。")
    @PutMapping(value = "/select")
    public Result<EpicScriptResponse> select(@Parameter(description = "剧本 ID") @RequestParam String id) {
        EpicScriptResponse script = epicScriptService.selectScript(id);
        if (script == null) {
            return Result.error("选中失败");
        }
        return Result.success(script);
    }

    @Operation(summary = "切换剧本当前版本", description = "将指定消息设为剧本当前生效版本。")
    @PutMapping(value = "/switchVersion")
    public Result<EpicScriptResponse> switchVersion(@Valid @RequestBody SwitchVersionRequest request) {
        EpicScriptResponse response = epicScriptService.switchVersion(request.getScriptId(), request.getMessageId());
        if (response == null) {
            return Result.error("切换失败");
        }
        return Result.success(response);
    }

    /**
     * 删除爽文剧本
     */
    @Operation(summary = "删除爽文剧本", description = "删除指定的爽文剧本。")
    @DeleteMapping(value = "/delete")
    public Result<Void> delete(@Parameter(description = "剧本 ID") @RequestParam String id) {
        boolean deleted = epicScriptService.deleteScript(id);
        if (!deleted) {
            return Result.error("删除失败");
        }
        return Result.success();
    }
}