import {
  Body,
  Controller,
  Delete,
  Get,
  Param,
  Patch,
  Post,
  Query,
  UseGuards,
} from '@nestjs/common';
import { isOk } from '@manacore/shared-errors';
import { ConversationService } from './conversation.service';
import { type Conversation } from '../db/schema/conversations.schema';
import { type Message } from '../db/schema/messages.schema';
import { JwtAuthGuard } from '../common/guards/jwt-auth.guard';
import {
  CurrentUser,
  CurrentUserData,
} from '../common/decorators/current-user.decorator';

@Controller('conversations')
@UseGuards(JwtAuthGuard)
export class ConversationController {
  constructor(private readonly conversationService: ConversationService) {}

  @Get()
  async getConversations(
    @CurrentUser() user: CurrentUserData,
    @Query('spaceId') spaceId?: string,
  ): Promise<Conversation[]> {
    const result = await this.conversationService.getConversations(
      user.userId,
      spaceId,
    );

    if (!isOk(result)) {
      throw result.error;
    }

    return result.value;
  }

  @Get('archived')
  async getArchivedConversations(
    @CurrentUser() user: CurrentUserData,
  ): Promise<Conversation[]> {
    const result = await this.conversationService.getArchivedConversations(
      user.userId,
    );

    if (!isOk(result)) {
      throw result.error;
    }

    return result.value;
  }

  @Get(':id')
  async getConversation(
    @Param('id') id: string,
    @CurrentUser() user: CurrentUserData,
  ): Promise<Conversation> {
    const result = await this.conversationService.getConversation(
      id,
      user.userId,
    );

    if (!isOk(result)) {
      throw result.error;
    }

    return result.value;
  }

  @Get(':id/messages')
  async getMessages(
    @Param('id') id: string,
    @CurrentUser() user: CurrentUserData,
  ): Promise<Message[]> {
    const result = await this.conversationService.getMessages(id, user.userId);

    if (!isOk(result)) {
      throw result.error;
    }

    return result.value;
  }

  @Post()
  async createConversation(
    @Body()
    body: {
      modelId: string;
      title?: string;
      templateId?: string;
      conversationMode?: 'free' | 'guided' | 'template';
      documentMode?: boolean;
      spaceId?: string;
    },
    @CurrentUser() user: CurrentUserData,
  ): Promise<Conversation> {
    const result = await this.conversationService.createConversation(
      user.userId,
      body.modelId,
      {
        title: body.title,
        templateId: body.templateId,
        conversationMode: body.conversationMode,
        documentMode: body.documentMode,
        spaceId: body.spaceId,
      },
    );

    if (!isOk(result)) {
      throw result.error;
    }

    return result.value;
  }

  @Post(':id/messages')
  async addMessage(
    @Param('id') id: string,
    @Body() body: { sender: 'user' | 'assistant' | 'system'; messageText: string },
    @CurrentUser() user: CurrentUserData,
  ): Promise<Message> {
    const result = await this.conversationService.addMessage(
      id,
      user.userId,
      body.sender,
      body.messageText,
    );

    if (!isOk(result)) {
      throw result.error;
    }

    return result.value;
  }

  @Patch(':id/title')
  async updateTitle(
    @Param('id') id: string,
    @Body() body: { title: string },
    @CurrentUser() user: CurrentUserData,
  ): Promise<Conversation> {
    const result = await this.conversationService.updateTitle(
      id,
      user.userId,
      body.title,
    );

    if (!isOk(result)) {
      throw result.error;
    }

    return result.value;
  }

  @Patch(':id/archive')
  async archiveConversation(
    @Param('id') id: string,
    @CurrentUser() user: CurrentUserData,
  ): Promise<Conversation> {
    const result = await this.conversationService.archiveConversation(
      id,
      user.userId,
    );

    if (!isOk(result)) {
      throw result.error;
    }

    return result.value;
  }

  @Patch(':id/unarchive')
  async unarchiveConversation(
    @Param('id') id: string,
    @CurrentUser() user: CurrentUserData,
  ): Promise<Conversation> {
    const result = await this.conversationService.unarchiveConversation(
      id,
      user.userId,
    );

    if (!isOk(result)) {
      throw result.error;
    }

    return result.value;
  }

  @Delete(':id')
  async deleteConversation(
    @Param('id') id: string,
    @CurrentUser() user: CurrentUserData,
  ): Promise<{ success: boolean }> {
    const result = await this.conversationService.deleteConversation(
      id,
      user.userId,
    );

    if (!isOk(result)) {
      throw result.error;
    }

    return { success: true };
  }
}