/*
 * 自然写教学资源管理与内容分发系统软件 V1.0
 * controller/DotCodeController.java - 点阵码生成API
 * controller/AuditController.java - 内容审核API
 */
package com.writech.resource.controller;

import java.util.*;
import java.util.logging.Logger;

/**
 * 点阵码生成控制器
 *
 * 提供点阵码资源的生成、查询、绑定等API接口。
 * 点阵码是自然写系统的核心技术资源。
 */
public class DotCodeController {

    private static final Logger logger =
        Logger.getLogger(DotCodeController.class.getName());

    /**
     * 生成点阵码资源包 POST /api/v1/dotcode/generate
     *
     * 为指定资源（字帖/试卷/课件）生成配套的点阵码。
     * 点阵码ID全局唯一分配，生成后可叠加到PDF模板上。
     */
    public Map<String, Object> generateDotCode(Map<String, Object> request) {
        String resourceId = (String) request.get("resource_id");
        int pageCount = (int) request.getOrDefault("page_count", 1);
        double pageWidth = (double) request.getOrDefault("page_width", 210.0);
        double pageHeight = (double) request.getOrDefault("page_height", 297.0);
        boolean overlay = (boolean) request.getOrDefault("overlay_on_template", false);

        logger.info(String.format(
            "点阵码生成请求: resource=%s, pages=%d, size=%.0fx%.0f, overlay=%b",
            resourceId, pageCount, pageWidth, pageHeight, overlay
        ));

        // 参数校验
        if (resourceId == null || resourceId.isEmpty()) {
            Map<String, Object> err = new HashMap<>();
            err.put("code", 400);
            err.put("message", "resource_id不能为空");
            return err;
        }
        if (pageCount < 1 || pageCount > 500) {
            Map<String, Object> err = new HashMap<>();
            err.put("code", 400);
            err.put("message", "页数须在1-500之间");
            return err;
        }

        // 调用点阵码生成服务
        // DotCodeService.DotCodeGenerateRequest genReq = new DotCodeService.DotCodeGenerateRequest();
        // genReq.setResourceId(resourceId);
        // genReq.setPageCount(pageCount);
        // DotCodeService.DotCodeGenerateResult result = dotCodeService.generateDotCodes(genReq);

        Map<String, Object> result = new HashMap<>();
        result.put("code", 0);
        result.put("message", "点阵码生成成功");
        result.put("data", Map.of(
            "resource_id", resourceId,
            "page_count", pageCount,
            "dot_code_ids", new ArrayList<>(),
            "output_file_url", ""
        ));
        return result;
    }

    /**
     * 查询点阵码绑定信息 GET /api/v1/dotcode/binding/{dotCodeId}
     *
     * 根据点阵码ID查询其绑定的资源和页面信息。
     * 用于点阵笔采集到坐标后定位到具体页面。
     */
    public Map<String, Object> queryBinding(long dotCodeId) {
        logger.info("查询点阵码绑定: dotCodeId=" + dotCodeId);

        // DotCodeBinding binding = dotCodeService.queryBinding(dotCodeId);
        // if (binding == null) {
        //     return errorResponse(404, "点阵码绑定信息不存在");
        // }

        Map<String, Object> result = new HashMap<>();
        result.put("code", 0);
        result.put("data", Map.of(
            "dot_code_id", dotCodeId,
            "resource_id", "",
            "page_index", 0,
            "area_type", "full_page",
            "area", Map.of("x", 0, "y", 0, "width", 210, "height", 297)
        ));
        return result;
    }

    /**
     * 查询资源关联的所有点阵码 GET /api/v1/dotcode/resource/{resourceId}
     */
    public Map<String, Object> queryByResource(String resourceId) {
        logger.info("查询资源点阵码: resource=" + resourceId);

        // List<DotCodeBinding> bindings = dotCodeService.queryByResourceId(resourceId);

        Map<String, Object> result = new HashMap<>();
        result.put("code", 0);
        result.put("data", Map.of(
            "resource_id", resourceId,
            "bindings", new ArrayList<>()
        ));
        return result;
    }

    /**
     * 撤销点阵码绑定 DELETE /api/v1/dotcode/binding/{dotCodeId}
     *
     * 撤销后该点阵码ID可被重新分配。
     * 仅管理员可执行此操作。
     */
    public Map<String, Object> revokeBinding(long dotCodeId, String operatorId) {
        logger.info(String.format(
            "撤销点阵码绑定: dotCodeId=%d, operator=%s", dotCodeId, operatorId
        ));

        // dotCodeService.revokeBinding(dotCodeId);

        Map<String, Object> result = new HashMap<>();
        result.put("code", 0);
        result.put("message", "点阵码绑定已撤销");
        return result;
    }
}

/**
 * 内容审核控制器
 *
 * 提供资源内容审核的完整流程API：
 * - 待审核资源列表查询
 * - 审核通过/驳回/退回操作
 * - 批量审核
 * - 审核记录查询
 * - 审核统计仪表盘
 */
class AuditController {

    private static final Logger logger =
        Logger.getLogger(AuditController.class.getName());

    /**
     * 获取待审核资源列表 GET /api/v1/resource/audit/pending
     *
     * 按上传时间排序，支持按类型和学科过滤。
     */
    public Map<String, Object> getPendingList(
        String type,
        String subject,
        int page,
        int pageSize
    ) {
        logger.info(String.format(
            "待审核列表: type=%s, subject=%s, page=%d", type, subject, page
        ));

        // 查询MySQL: status = 'PENDING'
        // List<Resource> pending = resourceMapper.selectByStatus("PENDING", type, subject, page, pageSize);
        // int total = resourceMapper.countByStatus("PENDING", type, subject);

        Map<String, Object> result = new HashMap<>();
        result.put("code", 0);
        result.put("data", Map.of(
            "total", 0,
            "page", page,
            "items", new ArrayList<>()
        ));
        return result;
    }

    /**
     * 执行审核操作 PUT /api/v1/resource/audit/{id}
     *
     * 审核通过后资源自动进入CDN分发，可被终端检索下载。
     * 驳回后通知上传者修改。
     */
    public Map<String, Object> performAudit(
        String resourceId,
        Map<String, Object> auditData
    ) {
        String action = (String) auditData.get("action");
        String comment = (String) auditData.get("comment");
        String auditorId = (String) auditData.get("auditor_id");

        logger.info(String.format(
            "审核操作: resource=%s, action=%s, auditor=%s",
            resourceId, action, auditorId
        ));

        // 校验审核动作合法性
        Set<String> validActions = new HashSet<>(Arrays.asList(
            "APPROVE", "REJECT", "RETURN"
        ));
        if (!validActions.contains(action)) {
            Map<String, Object> err = new HashMap<>();
            err.put("code", 400);
            err.put("message", "不合法的审核操作: " + action);
            return err;
        }

        // 调用审核服务
        // AuditService.AuditRequest req = new AuditService.AuditRequest();
        // req.setResourceId(resourceId);
        // req.setAction(AuditService.AuditAction.valueOf(action));
        // req.setComment(comment);
        // req.setAuditorId(auditorId);
        // return auditService.performAudit(req);

        Map<String, Object> result = new HashMap<>();
        result.put("code", 0);
        result.put("message", "审核操作成功");
        result.put("data", Map.of(
            "resource_id", resourceId,
            "action", action,
            "new_status", "APPROVE".equals(action) ? "APPROVED" : "REJECTED"
        ));
        return result;
    }

    /**
     * 批量审核 POST /api/v1/resource/audit/batch
     */
    public Map<String, Object> batchAudit(Map<String, Object> batchRequest) {
        List<String> resourceIds = (List<String>) batchRequest.get("resource_ids");
        String action = (String) batchRequest.get("action");
        String comment = (String) batchRequest.get("comment");
        String auditorId = (String) batchRequest.get("auditor_id");

        logger.info(String.format(
            "批量审核: count=%d, action=%s", resourceIds.size(), action
        ));

        // return auditService.batchAudit(resourceIds, action, comment, auditorId);

        Map<String, Object> result = new HashMap<>();
        result.put("code", 0);
        result.put("data", Map.of(
            "total", resourceIds.size(),
            "success", resourceIds.size(),
            "failed", 0
        ));
        return result;
    }

    /**
     * 查询审核记录 GET /api/v1/resource/audit/records
     */
    public Map<String, Object> getAuditRecords(
        String resourceId,
        String auditorId,
        int page,
        int pageSize
    ) {
        logger.info(String.format(
            "审核记录查询: resource=%s, auditor=%s", resourceId, auditorId
        ));

        // return auditService.queryAuditRecords(resourceId, auditorId, page, pageSize);

        Map<String, Object> result = new HashMap<>();
        result.put("code", 0);
        result.put("data", Map.of(
            "total", 0,
            "page", page,
            "items", new ArrayList<>()
        ));
        return result;
    }

    /**
     * 审核统计仪表盘 GET /api/v1/resource/audit/stats
     *
     * 返回待审核数量、今日已审核数量、通过率等统计。
     */
    public Map<String, Object> getAuditStats() {
        // return auditService.getAuditStats();

        Map<String, Object> result = new HashMap<>();
        result.put("code", 0);
        result.put("data", Map.of(
            "pending_count", 0,
            "approved_today", 0,
            "rejected_today", 0,
            "approval_rate", 0.0,
            "avg_audit_hours", 0.0
        ));
        return result;
    }
}
