From 8bc6f5c2aee6d565cc5c6ac5baf22b0f84f4d0f6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E9=99=88=E6=AD=86?= <2685475410@qq.com>
Date: Tue, 29 Sep 2026 23:54:27 +0800
Subject: [PATCH] =?UTF-8?q?=F0=9F=90=9B=20fix(search):=20=E6=8C=89=20tab?=
 =?UTF-8?q?=5Ftype=20=E8=BF=87=E6=BB=A4=E6=90=9C=E7=B4=A2=E7=BB=93?=
 =?UTF-8?q?=E6=9E=9C?=
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- 上游 search/tab/v/ 固定返回所有 tab 的 search_tabs，此前原样转发导致传 tab_type 仍返回全部结果
- 新增 filterSearchTabs 只保留匹配项，无匹配时保留原样兜底
- 过滤路径用 UseNumber 解析重组，避免 19 位 book_id 经 float64 丢精度；解析失败退回原样转发
- 新增测试：过滤正确性、无匹配兜底、大整数精度保持
---
 internal/fqapi/search.go      | 37 +++++++++++++++++++-
 internal/fqapi/search_test.go | 63 +++++++++++++++++++++++++++++++++++
 2 files changed, 99 insertions(+), 1 deletion(-)
 create mode 100644 internal/fqapi/search_test.go

diff --git a/internal/fqapi/search.go b/internal/fqapi/search.go
index 3ff37a6..8c2a248 100644
--- a/internal/fqapi/search.go
+++ b/internal/fqapi/search.go
@@ -1,6 +1,8 @@
 package fqapi
 
 import (
+	"bytes"
+	"encoding/json"
 	"fanqie/internal/common"
 	"fmt"
 	"net/url"
@@ -57,9 +59,42 @@ func fetchBookSearch(key string, offset int, tabType int) (string, error) {
 	}
 
 	if code, ok := respJSON["code"].(float64); ok && code == 0 {
-		return resp.Text, nil
+		// 用 UseNumber 重新解析后按 tab_type 过滤:
+		// 上游 search/tab/v/ 固定返回所有 tab 的 search_tabs;
+		// 大整数 ID 经 float64 重组会丢精度,必须 UseNumber
+		dec := json.NewDecoder(bytes.NewReader(resp.Content))
+		dec.UseNumber()
+		var numJSON map[string]interface{}
+		if err := dec.Decode(&numJSON); err != nil {
+			return resp.Text, nil // 解析失败时退回原样转发
+		}
+		filterSearchTabs(numJSON, tabType)
+		return ToJSON(numJSON)
 	}
 
 	return BuildErrorResponseWithCode(1, "搜索失败"), nil
 }
 
+// filterSearchTabs 按 tab_type 只保留 search_tabs 中匹配的项;无匹配时保留原样
+func filterSearchTabs(respJSON map[string]interface{}, tabType int) {
+	tabs, ok := respJSON["search_tabs"].([]interface{})
+	if !ok {
+		return
+	}
+	filtered := make([]interface{}, 0, 1)
+	for _, t := range tabs {
+		m, ok := t.(map[string]interface{})
+		if !ok {
+			continue
+		}
+		if tt, ok := m["tab_type"].(json.Number); ok {
+			if v, err := tt.Int64(); err == nil && int(v) == tabType {
+				filtered = append(filtered, m)
+			}
+		}
+	}
+	if len(filtered) > 0 {
+		respJSON["search_tabs"] = filtered
+	}
+}
+
diff --git a/internal/fqapi/search_test.go b/internal/fqapi/search_test.go
new file mode 100644
index 0000000..21f7696
--- /dev/null
+++ b/internal/fqapi/search_test.go
@@ -0,0 +1,63 @@
+package fqapi
+
+import (
+	"bytes"
+	"encoding/json"
+	"strings"
+	"testing"
+)
+
+// TestFilterSearchTabs 上游返回全部 tab 时,应只保留请求的 tab_type;无匹配时保留原样
+func TestFilterSearchTabs(t *testing.T) {
+	raw := `{"code":0,"search_tabs":[
+		{"tab_type":1,"title":"综合"},
+		{"tab_type":3,"title":"书籍","book_id":7123456789012345678}
+	]}`
+
+	decode := func(s string) map[string]interface{} {
+		dec := json.NewDecoder(strings.NewReader(s))
+		dec.UseNumber()
+		var m map[string]interface{}
+		if err := dec.Decode(&m); err != nil {
+			t.Fatal(err)
+		}
+		return m
+	}
+
+	m := decode(raw)
+	filterSearchTabs(m, 3)
+	tabs := m["search_tabs"].([]interface{})
+	if len(tabs) != 1 {
+		t.Fatalf("tab_type=3 应只剩 1 个 tab, got %d", len(tabs))
+	}
+	// 大整数 ID 不得丢精度
+	want := "7123456789012345678"
+	got := tabs[0].(map[string]interface{})["book_id"].(json.Number).String()
+	if got != want {
+		t.Errorf("book_id 精度丢失: got %s want %s", got, want)
+	}
+
+	// 无匹配 tab 时保留原样
+	m = decode(raw)
+	filterSearchTabs(m, 99)
+	if len(m["search_tabs"].([]interface{})) != 2 {
+		t.Error("无匹配时应保留原始 search_tabs")
+	}
+}
+
+// TestToJSONPreservesNumberID 重组后大整数 ID 字符串不变
+func TestToJSONPreservesNumberID(t *testing.T) {
+	dec := json.NewDecoder(bytes.NewReader([]byte(`{"id":7123456789012345678}`)))
+	dec.UseNumber()
+	var m map[string]interface{}
+	if err := dec.Decode(&m); err != nil {
+		t.Fatal(err)
+	}
+	out, err := ToJSON(m)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if !strings.Contains(out, "7123456789012345678") {
+		t.Errorf("重组丢失精度: %s", out)
+	}
+}