459 lines
13 KiB
Go
459 lines
13 KiB
Go
package handler
|
|
|
|
import (
|
|
"net/http"
|
|
"strconv"
|
|
"strings"
|
|
"unicode/utf8"
|
|
|
|
"github.com/gin-gonic/gin"
|
|
"kefu-sys/server/internal/middleware"
|
|
"kefu-sys/server/internal/model"
|
|
)
|
|
|
|
type KnowledgeHandler struct{}
|
|
|
|
func NewKnowledgeHandler() *KnowledgeHandler { return &KnowledgeHandler{} }
|
|
|
|
func requireKnowledgeManager(c *gin.Context) bool {
|
|
if middleware.HasAnyRole(c, "admin", "supervisor") {
|
|
return true
|
|
}
|
|
c.JSON(http.StatusForbidden, gin.H{"code": 403, "message": "仅主管或管理员可管理知识库"})
|
|
return false
|
|
}
|
|
|
|
func hasKnowledgeCapacity(tenantID uint) (bool, error) {
|
|
var tenant model.Tenant
|
|
if err := model.DB.First(&tenant, tenantID).Error; err != nil {
|
|
return false, err
|
|
}
|
|
if tenant.PlanID == nil {
|
|
return true, nil
|
|
}
|
|
var plan model.Plan
|
|
if err := model.DB.First(&plan, *tenant.PlanID).Error; err != nil {
|
|
return false, err
|
|
}
|
|
if plan.KBLimit == 0 {
|
|
return true, nil
|
|
}
|
|
var count int64
|
|
if err := model.DB.Model(&model.KnowledgeEntry{}).Where("tenant_id = ?", tenantID).Count(&count).Error; err != nil {
|
|
return false, err
|
|
}
|
|
return count < int64(plan.KBLimit), nil
|
|
}
|
|
|
|
type CategoryListItem struct {
|
|
model.Category
|
|
EntryCount int64 `json:"entry_count"` // 本分类直属条目数
|
|
TotalCount int64 `json:"total_count"` // 含子分类汇总
|
|
}
|
|
|
|
type CategoryReq struct {
|
|
Name string `json:"name" binding:"required"`
|
|
ParentID *uint `json:"parent_id"`
|
|
}
|
|
|
|
func (h *KnowledgeHandler) ListCategories(c *gin.Context) {
|
|
tenantID := middleware.GetTenantID(c)
|
|
|
|
var categories []model.Category
|
|
model.DB.Where("tenant_id = ?", tenantID).Order("id asc").Find(&categories)
|
|
|
|
type countRow struct {
|
|
CategoryID uint
|
|
Cnt int64
|
|
}
|
|
var rows []countRow
|
|
model.DB.Model(&model.KnowledgeEntry{}).
|
|
Select("category_id, COUNT(*) as cnt").
|
|
Where("tenant_id = ?", tenantID).
|
|
Group("category_id").
|
|
Scan(&rows)
|
|
directMap := map[uint]int64{}
|
|
for _, r := range rows {
|
|
directMap[r.CategoryID] = r.Cnt
|
|
}
|
|
// 子分类映射 parent -> children
|
|
childrenMap := map[uint][]uint{}
|
|
for _, cat := range categories {
|
|
if cat.ParentID != nil {
|
|
childrenMap[*cat.ParentID] = append(childrenMap[*cat.ParentID], cat.ID)
|
|
}
|
|
}
|
|
var rollup func(id uint) int64
|
|
rollup = func(id uint) int64 {
|
|
sum := directMap[id]
|
|
for _, child := range childrenMap[id] {
|
|
sum += rollup(child)
|
|
}
|
|
return sum
|
|
}
|
|
|
|
var total int64
|
|
model.DB.Model(&model.KnowledgeEntry{}).Where("tenant_id = ?", tenantID).Count(&total)
|
|
|
|
items := make([]CategoryListItem, 0, len(categories))
|
|
for _, cat := range categories {
|
|
items = append(items, CategoryListItem{
|
|
Category: cat,
|
|
EntryCount: directMap[cat.ID],
|
|
TotalCount: rollup(cat.ID),
|
|
})
|
|
}
|
|
middleware.JSON(c, gin.H{"list": items, "total_entries": total})
|
|
}
|
|
|
|
func validateCategoryName(name string) string {
|
|
name = strings.TrimSpace(name)
|
|
n := utf8.RuneCountInString(name)
|
|
if n < 2 || n > 30 {
|
|
return ""
|
|
}
|
|
return name
|
|
}
|
|
|
|
// 校验父分类：最多两级（父分类自身 parent_id 必须为空）
|
|
func validateCategoryParent(tenantID uint, parentID *uint) error {
|
|
if parentID == nil {
|
|
return nil
|
|
}
|
|
var parent model.Category
|
|
if err := model.DB.Where("id = ? AND tenant_id = ?", *parentID, tenantID).First(&parent).Error; err != nil {
|
|
return errParentNotFound
|
|
}
|
|
if parent.ParentID != nil {
|
|
return errCategoryDepth
|
|
}
|
|
return nil
|
|
}
|
|
|
|
var (
|
|
errParentNotFound = errCat("父分类不存在")
|
|
errCategoryDepth = errCat("仅支持两级分类，不能挂到子分类下")
|
|
errCategoryName = errCat("分类名称需 2-30 个字符")
|
|
errCategoryDup = errCat("同级下分类名称已存在")
|
|
)
|
|
|
|
type catError string
|
|
|
|
func errCat(s string) catError { return catError(s) }
|
|
func (e catError) Error() string { return string(e) }
|
|
|
|
func isCategoryNameTaken(tenantID uint, name string, parentID *uint, excludeID uint) bool {
|
|
q := model.DB.Model(&model.Category{}).Where("tenant_id = ? AND name = ?", tenantID, name)
|
|
if parentID == nil {
|
|
q = q.Where("parent_id IS NULL")
|
|
} else {
|
|
q = q.Where("parent_id = ?", *parentID)
|
|
}
|
|
if excludeID > 0 {
|
|
q = q.Where("id <> ?", excludeID)
|
|
}
|
|
var n int64
|
|
q.Count(&n)
|
|
return n > 0
|
|
}
|
|
|
|
func (h *KnowledgeHandler) CreateCategory(c *gin.Context) {
|
|
if !requireKnowledgeManager(c) {
|
|
return
|
|
}
|
|
var req CategoryReq
|
|
if err := c.ShouldBindJSON(&req); err != nil {
|
|
c.JSON(http.StatusBadRequest, gin.H{"code": 400, "message": "参数错误"})
|
|
return
|
|
}
|
|
name := validateCategoryName(req.Name)
|
|
if name == "" {
|
|
c.JSON(http.StatusBadRequest, gin.H{"code": 400, "message": errCategoryName.Error()})
|
|
return
|
|
}
|
|
tenantID := middleware.GetTenantID(c)
|
|
if err := validateCategoryParent(tenantID, req.ParentID); err != nil {
|
|
c.JSON(http.StatusBadRequest, gin.H{"code": 400, "message": err.Error()})
|
|
return
|
|
}
|
|
if isCategoryNameTaken(tenantID, name, req.ParentID, 0) {
|
|
c.JSON(http.StatusConflict, gin.H{"code": 409, "message": errCategoryDup.Error()})
|
|
return
|
|
}
|
|
category := model.Category{
|
|
TenantID: tenantID,
|
|
Name: name,
|
|
ParentID: req.ParentID,
|
|
}
|
|
if err := model.DB.Create(&category).Error; err != nil {
|
|
c.JSON(http.StatusInternalServerError, gin.H{"code": 500, "message": "创建失败"})
|
|
return
|
|
}
|
|
middleware.JSON(c, category)
|
|
}
|
|
|
|
func (h *KnowledgeHandler) UpdateCategory(c *gin.Context) {
|
|
if !requireKnowledgeManager(c) {
|
|
return
|
|
}
|
|
tenantID := middleware.GetTenantID(c)
|
|
id := c.Param("id")
|
|
var category model.Category
|
|
if err := model.DB.Where("id = ? AND tenant_id = ?", id, tenantID).First(&category).Error; err != nil {
|
|
c.JSON(http.StatusNotFound, gin.H{"code": 404, "message": "分类不存在"})
|
|
return
|
|
}
|
|
var req CategoryReq
|
|
if err := c.ShouldBindJSON(&req); err != nil {
|
|
c.JSON(http.StatusBadRequest, gin.H{"code": 400, "message": "参数错误"})
|
|
return
|
|
}
|
|
name := validateCategoryName(req.Name)
|
|
if name == "" {
|
|
c.JSON(http.StatusBadRequest, gin.H{"code": 400, "message": errCategoryName.Error()})
|
|
return
|
|
}
|
|
// 禁止把自己设为自己的子级；改父级时校验
|
|
if req.ParentID != nil && *req.ParentID == category.ID {
|
|
c.JSON(http.StatusBadRequest, gin.H{"code": 400, "message": "不能将分类设为自己的子分类"})
|
|
return
|
|
}
|
|
// 若本分类已有子分类，则不能再挂到其它父级下（保持最多两级）
|
|
if req.ParentID != nil {
|
|
var childCnt int64
|
|
model.DB.Model(&model.Category{}).Where("parent_id = ? AND tenant_id = ?", category.ID, tenantID).Count(&childCnt)
|
|
if childCnt > 0 {
|
|
c.JSON(http.StatusBadRequest, gin.H{"code": 400, "message": "已有子分类的节点不能改为子分类"})
|
|
return
|
|
}
|
|
}
|
|
if err := validateCategoryParent(tenantID, req.ParentID); err != nil {
|
|
c.JSON(http.StatusBadRequest, gin.H{"code": 400, "message": err.Error()})
|
|
return
|
|
}
|
|
if isCategoryNameTaken(tenantID, name, req.ParentID, category.ID) {
|
|
c.JSON(http.StatusConflict, gin.H{"code": 409, "message": errCategoryDup.Error()})
|
|
return
|
|
}
|
|
updates := map[string]interface{}{
|
|
"name": name,
|
|
"parent_id": req.ParentID,
|
|
}
|
|
if err := model.DB.Model(&category).Updates(updates).Error; err != nil {
|
|
c.JSON(http.StatusInternalServerError, gin.H{"code": 500, "message": "更新失败"})
|
|
return
|
|
}
|
|
model.DB.First(&category, category.ID)
|
|
middleware.JSON(c, category)
|
|
}
|
|
|
|
func (h *KnowledgeHandler) DeleteCategory(c *gin.Context) {
|
|
if !requireKnowledgeManager(c) {
|
|
return
|
|
}
|
|
tenantID := middleware.GetTenantID(c)
|
|
id := c.Param("id")
|
|
var category model.Category
|
|
if err := model.DB.Where("id = ? AND tenant_id = ?", id, tenantID).First(&category).Error; err != nil {
|
|
c.JSON(http.StatusNotFound, gin.H{"code": 404, "message": "分类不存在"})
|
|
return
|
|
}
|
|
var childCnt int64
|
|
model.DB.Model(&model.Category{}).Where("parent_id = ? AND tenant_id = ?", category.ID, tenantID).Count(&childCnt)
|
|
if childCnt > 0 {
|
|
c.JSON(http.StatusConflict, gin.H{"code": 409, "message": "请先删除或移走子分类"})
|
|
return
|
|
}
|
|
// 本分类及不应有子分类后，检查条目
|
|
var entryCnt int64
|
|
model.DB.Model(&model.KnowledgeEntry{}).Where("category_id = ? AND tenant_id = ?", category.ID, tenantID).Count(&entryCnt)
|
|
if entryCnt > 0 {
|
|
c.JSON(http.StatusConflict, gin.H{"code": 409, "message": "分类下仍有知识条目，请先删除或迁移条目"})
|
|
return
|
|
}
|
|
if err := model.DB.Delete(&category).Error; err != nil {
|
|
c.JSON(http.StatusInternalServerError, gin.H{"code": 500, "message": "删除失败"})
|
|
return
|
|
}
|
|
middleware.JSON(c, gin.H{"message": "已删除"})
|
|
}
|
|
|
|
// categoryScopeIDs 选中分类时包含自身与所有直接子分类（两级树）
|
|
func categoryScopeIDs(tenantID, categoryID uint) []uint {
|
|
ids := []uint{categoryID}
|
|
var children []model.Category
|
|
model.DB.Where("tenant_id = ? AND parent_id = ?", tenantID, categoryID).Find(&children)
|
|
for _, ch := range children {
|
|
ids = append(ids, ch.ID)
|
|
}
|
|
return ids
|
|
}
|
|
|
|
type EntryListItem struct {
|
|
model.KnowledgeEntry
|
|
CategoryName string `json:"category_name"`
|
|
}
|
|
|
|
func (h *KnowledgeHandler) ListEntries(c *gin.Context) {
|
|
tenantID := middleware.GetTenantID(c)
|
|
page, pageSize := middleware.GetPageParams(c)
|
|
categoryID := c.Query("category_id")
|
|
search := c.Query("search")
|
|
status := c.Query("status")
|
|
sortBy := c.Query("sort") // usage | updated(default)
|
|
|
|
var entries []model.KnowledgeEntry
|
|
var total int64
|
|
|
|
query := model.DB.Where("tenant_id = ?", tenantID)
|
|
if categoryID != "" {
|
|
if id64, err := strconv.ParseUint(categoryID, 10, 64); err == nil && id64 > 0 {
|
|
ids := categoryScopeIDs(tenantID, uint(id64))
|
|
query = query.Where("category_id IN ?", ids)
|
|
} else {
|
|
query = query.Where("category_id = ?", categoryID)
|
|
}
|
|
}
|
|
if search != "" {
|
|
query = query.Where("title LIKE ? OR content LIKE ?", "%"+search+"%", "%"+search+"%")
|
|
}
|
|
if status != "" {
|
|
query = query.Where("status = ?", status)
|
|
}
|
|
|
|
query.Model(&model.KnowledgeEntry{}).Count(&total)
|
|
order := "updated_at desc"
|
|
if sortBy == "usage" {
|
|
order = "usage_count desc, updated_at desc"
|
|
} else if sortBy == "title" {
|
|
order = "title asc"
|
|
}
|
|
query.Order(order).Offset((page - 1) * pageSize).Limit(pageSize).Find(&entries)
|
|
|
|
catIDs := make([]uint, 0, len(entries))
|
|
for _, e := range entries {
|
|
catIDs = append(catIDs, e.CategoryID)
|
|
}
|
|
catMap := map[uint]string{}
|
|
if len(catIDs) > 0 {
|
|
seen := map[uint]struct{}{}
|
|
unique := make([]uint, 0)
|
|
for _, id := range catIDs {
|
|
if _, ok := seen[id]; ok {
|
|
continue
|
|
}
|
|
seen[id] = struct{}{}
|
|
unique = append(unique, id)
|
|
}
|
|
var cats []model.Category
|
|
model.DB.Where("id IN ?", unique).Find(&cats)
|
|
for _, cat := range cats {
|
|
catMap[cat.ID] = cat.Name
|
|
}
|
|
}
|
|
|
|
items := make([]EntryListItem, 0, len(entries))
|
|
for _, e := range entries {
|
|
items = append(items, EntryListItem{
|
|
KnowledgeEntry: e,
|
|
CategoryName: catMap[e.CategoryID],
|
|
})
|
|
}
|
|
|
|
middleware.JSONList(c, items, total, page, pageSize)
|
|
}
|
|
|
|
func (h *KnowledgeHandler) CreateEntry(c *gin.Context) {
|
|
if !requireKnowledgeManager(c) {
|
|
return
|
|
}
|
|
var entry model.KnowledgeEntry
|
|
if err := c.ShouldBindJSON(&entry); err != nil {
|
|
c.JSON(http.StatusBadRequest, gin.H{"code": 400, "message": "参数错误"})
|
|
return
|
|
}
|
|
entry.TenantID = middleware.GetTenantID(c)
|
|
available, err := hasKnowledgeCapacity(entry.TenantID)
|
|
if err != nil {
|
|
c.JSON(http.StatusInternalServerError, gin.H{"code": 500, "message": "校验知识库容量失败"})
|
|
return
|
|
}
|
|
if !available {
|
|
c.JSON(http.StatusConflict, gin.H{"code": 409, "message": "当前套餐知识库容量已达上限"})
|
|
return
|
|
}
|
|
var category model.Category
|
|
if err := model.DB.Where("id = ? AND tenant_id = ?", entry.CategoryID, entry.TenantID).First(&category).Error; err != nil {
|
|
c.JSON(http.StatusBadRequest, gin.H{"code": 400, "message": "知识分类不存在"})
|
|
return
|
|
}
|
|
|
|
if err := model.DB.Create(&entry).Error; err != nil {
|
|
c.JSON(http.StatusInternalServerError, gin.H{"code": 500, "message": "创建失败"})
|
|
return
|
|
}
|
|
|
|
middleware.JSON(c, entry)
|
|
}
|
|
|
|
func (h *KnowledgeHandler) UpdateEntry(c *gin.Context) {
|
|
if !requireKnowledgeManager(c) {
|
|
return
|
|
}
|
|
tenantID := middleware.GetTenantID(c)
|
|
id := c.Param("id")
|
|
|
|
var entry model.KnowledgeEntry
|
|
if err := model.DB.Where("id = ? AND tenant_id = ?", id, tenantID).First(&entry).Error; err != nil {
|
|
c.JSON(http.StatusNotFound, gin.H{"code": 404, "message": "条目不存在"})
|
|
return
|
|
}
|
|
|
|
var updates map[string]interface{}
|
|
if err := c.ShouldBindJSON(&updates); err != nil {
|
|
c.JSON(http.StatusBadRequest, gin.H{"code": 400, "message": "参数错误"})
|
|
return
|
|
}
|
|
|
|
allowed := map[string]bool{"category_id": true, "title": true, "content": true, "status": true}
|
|
for key := range updates {
|
|
if !allowed[key] {
|
|
delete(updates, key)
|
|
}
|
|
}
|
|
if categoryID, exists := updates["category_id"]; exists {
|
|
var category model.Category
|
|
if err := model.DB.Where("id = ? AND tenant_id = ?", categoryID, tenantID).First(&category).Error; err != nil {
|
|
c.JSON(http.StatusBadRequest, gin.H{"code": 400, "message": "知识分类不存在"})
|
|
return
|
|
}
|
|
}
|
|
if len(updates) == 0 {
|
|
c.JSON(http.StatusBadRequest, gin.H{"code": 400, "message": "没有可更新字段"})
|
|
return
|
|
}
|
|
|
|
if err := model.DB.Model(&entry).Updates(updates).Error; err != nil {
|
|
c.JSON(http.StatusInternalServerError, gin.H{"code": 500, "message": "更新失败"})
|
|
return
|
|
}
|
|
model.DB.First(&entry, entry.ID)
|
|
middleware.JSON(c, entry)
|
|
}
|
|
|
|
func (h *KnowledgeHandler) DeleteEntry(c *gin.Context) {
|
|
if !requireKnowledgeManager(c) {
|
|
return
|
|
}
|
|
tenantID := middleware.GetTenantID(c)
|
|
id := c.Param("id")
|
|
|
|
result := model.DB.Where("id = ? AND tenant_id = ?", id, tenantID).Delete(&model.KnowledgeEntry{})
|
|
if result.RowsAffected == 0 {
|
|
c.JSON(http.StatusNotFound, gin.H{"code": 404, "message": "条目不存在"})
|
|
return
|
|
}
|
|
|
|
middleware.JSON(c, gin.H{"message": "已删除"})
|
|
}
|