package service

import (
 "bytes"
 "context"
 "io"
 "net/http"
 "net/http/httptest"
 "strings"
 "testing"

 "github.com/Wei-Shaw/sub2api/internal/config"
 "github.com/gin-gonic/gin"
 "github.com/stretchr/testify/require"
)

// Reproduces the reported compatibility failure through the unmodified upgrade
// Forward path. The recorder proves whether an upstream request was attempted.
func TestReproduceUpgradeMode1CompatibilityRegression(t *testing.T) {
 gin.SetMode(gin.TestMode)
 for _, tc := range []struct{name, body string}{
  {"string_input", `{"model":"gpt-5.2","input":"Return OK","stream":true}`},
  {"token_budget", `{"model":"gpt-5.2","input":[{"role":"user","content":[{"type":"input_text","text":"Return OK"}]}],"max_output_tokens":100,"stream":true}`},
 } {
  for _, enabled := range []bool{false,true} {
   state := "off"; if enabled { state = "on" }
   t.Run(tc.name+"/protection_"+state, func(t *testing.T) {
    c, _ := gin.CreateTestContext(httptest.NewRecorder())
    body:=[]byte(tc.body)
    c.Request=httptest.NewRequest("POST","/v1/responses",bytes.NewReader(body))
    c.Request.Header.Set("User-Agent","relay-regression/1.0")
    a:=mode1TestAccount(1)
    a.Credentials=map[string]any{"access_token":"dummy","chatgpt_account_id":"dummy"}
    a.Extra["openai_passthrough"]=false
    a.Extra[AntiDegradeMarkerExtraKey].(map[string]any)["enabled"]=enabled
    u:=&mode1ForwardRecorder{httpUpstreamRecorder:httpUpstreamRecorder{resp:&http.Response{StatusCode:200,Header:http.Header{"Content-Type":[]string{"text/event-stream"}},Body:io.NopCloser(strings.NewReader("data: {\"type\":\"response.output_text.delta\",\"delta\":\"OK\"}\n\ndata: {\"type\":\"response.completed\",\"response\":{\"id\":\"test\",\"status\":\"completed\",\"output\":[]}}\n\ndata: [DONE]\n\n"))}}}
    cfg:=&config.Config{}; cfg.Gateway.TLSFingerprint.Enabled=true
    gw:=&OpenAIGatewayService{cfg:cfg,httpUpstream:u,toolCorrector:NewCodexToolCorrector()}
    _,err:=gw.Forward(context.Background(),c,a,body)
    if enabled {
     require.ErrorContains(t,err,"模式一阻止")
     require.Nil(t,u.lastReq,"failure must occur before any upstream request")
     t.Logf("REPRODUCED: protection=%v upstream_attempted=false error=%v",enabled,err)
    } else {
     require.NoError(t,err)
     require.NotNil(t,u.lastReq)
     t.Log("CONTROL: protection=false upstream_attempted=true")
    }
   })
  }
 }
}