// package router
// @Link  https://github.com/xiujiecn/xiu-admin
// @Copyright  Copyright (c) 2025 LiXiujie
// @Author  Lxj <li@xiujie.cn>
// @License  https://github.com/xiujiecn/xiu-admin/blob/master/LICENSE
package router

import (
	"context"
	"git.5iot.com/iotlcm-public/iotlcm-admin-svr/internal/service"
	"os"
	"path/filepath"
	"strings"

	"github.com/gogf/gf/v2/frame/g"
	"github.com/gogf/gf/v2/net/ghttp"
)

// InitRouter 初始化路由
func InitRouter(ctx context.Context, s *ghttp.Server) {
	uploadPath := g.Cfg().MustGet(ctx, "system.upload.local.path").String()
	if uploadPath != "" {
		s.AddStaticPath("/upload", resolveUploadStaticPath(uploadPath))
	}
	s.Group("/api/v1", func(group *ghttp.RouterGroup) {
		group.Middleware(
			service.Middleware().Ctx,
			service.Middleware().ResponseHandler,
			service.Middleware().CORS,
		)
		System(ctx, group)
		Monitor(ctx, group)
		Common(ctx, group)
		GenCodes(ctx, group)
		Gen(ctx, group)
		Iot(ctx, group)
		Agent(ctx, group)
		Home(ctx, group)
		Pay(ctx, group)
		Trade(ctx, group)
	})
	//操作日志
	s.BindHookHandler("/*", ghttp.HookAfterOutput, func(r *ghttp.Request) {
		service.Middleware().OperationLog(r)
	})
}

func resolveUploadStaticPath(uploadPath string) string {
	uploadPath = strings.TrimSpace(uploadPath)
	if uploadPath == "" {
		return ""
	}
	for _, candidate := range uploadStaticPathCandidates(uploadPath) {
		if info, err := os.Stat(candidate); err == nil && info.IsDir() {
			return candidate
		}
	}
	return uploadPath
}

func uploadStaticPathCandidates(uploadPath string) []string {
	var candidates []string
	for _, root := range []string{
		os.Getenv("IOTLCM_SERVER_UPLOAD_ROOT"),
		os.Getenv("IOTLCM_UPLOAD_ROOT"),
		uploadPath,
	} {
		root = strings.TrimSpace(root)
		if root == "" {
			continue
		}
		candidates = appendUploadStaticPathCandidate(candidates, root)
	}
	return candidates
}

func appendUploadStaticPathCandidate(candidates []string, root string) []string {
	for _, equivalent := range uploadStaticEquivalentPaths(root) {
		if filepath.IsAbs(equivalent) {
			candidates = appendUniqueStaticPath(candidates, equivalent)
			continue
		}
		for _, base := range uploadStaticBaseDirs() {
			candidates = appendUniqueStaticPath(candidates, filepath.Join(base, equivalent))
		}
		candidates = appendUniqueStaticPath(candidates, equivalent)
	}
	return candidates
}

func uploadStaticEquivalentPaths(root string) []string {
	root = strings.TrimSpace(root)
	if root == "" {
		return nil
	}
	paths := []string{root}
	normalized := filepath.ToSlash(filepath.Clean(root))
	if normalized == "resource/upload" || strings.HasSuffix(normalized, "/resource/upload") {
		prefix := strings.TrimSuffix(normalized, "resource/upload")
		paths = appendUniqueStaticPath(paths, filepath.FromSlash(prefix+"upload"))
	}
	return paths
}

func uploadStaticBaseDirs() []string {
	var dirs []string
	if wd, err := os.Getwd(); err == nil && strings.TrimSpace(wd) != "" {
		dirs = appendUniqueStaticPath(dirs, wd)
	}
	if exe, err := os.Executable(); err == nil && strings.TrimSpace(exe) != "" {
		dirs = appendUniqueStaticPath(dirs, filepath.Dir(exe))
	}
	return dirs
}

func appendUniqueStaticPath(values []string, value string) []string {
	value = strings.TrimSpace(value)
	if value == "" {
		return values
	}
	cleaned := filepath.Clean(value)
	for _, existing := range values {
		if filepath.Clean(strings.TrimSpace(existing)) == cleaned {
			return values
		}
	}
	return append(values, value)
}