package executor import (	"bytes"	"context"	"fmt"	"io"	"net/http" 	"github.com/router-for-me/CLIProxyAPI/v7/internal/runtime/executor/helps"	"github.com/router-for-me/CLIProxyAPI/v7/internal/thinking"	cliproxyauth "github.com/router-for-me/CLIProxyAPI/v7/sdk/cliproxy/auth"	cliproxyexecutor "github.com/router-for-me/CLIProxyAPI/v7/sdk/cliproxy/executor"	sdktranslator "github.com/router-for-me/CLIProxyAPI/v7/sdk/translator"	log "github.com/sirupsen/logrus") func (e *ClaudeExecutor) Execute(ctx context.Context, auth *cliproxyauth.Auth, req cliproxyexecutor.Request, opts cliproxyexecutor.Options) (resp cliproxyexecutor.Response, err error) {	if opts.Alt == "responses/compact" {		return resp, statusErr{code: http.StatusNotImplemented, msg: "/responses/compact not supported"}	}	baseModel := thinking.ParseSuffix(req.Model).ModelName	upstreamModel := e.upstreamModel(baseModel) 	apiKey, baseURL := claudeCreds(auth)	if baseURL == "" {		baseURL = "https://api.anthropic.com"	} 	reporter := helps.NewExecutorUsageReporter(ctx, e, baseModel, auth)	defer reporter.TrackFailure(ctx, &err)	from := opts.SourceFormat	responseFormat := cliproxyexecutor.ResponseFormatOrSource(opts)	to := sdktranslator.FromString("claude")	// Use an upstream stream whenever the downstream response needs translation	// from Claude events. Native Claude responses use the JSON response path.	upstreamStream := responseFormat != to	originalPayloadSource := req.Payload	if len(opts.OriginalRequest) > 0 {		originalPayloadSource = opts.OriginalRequest	}	originalPayload := originalPayloadSource	originalTranslated := helps.TranslateRequestWithCodexMultiAgentV2(ctx, opts.Headers, e.cfg, from, to, baseModel, originalPayload, upstreamStream)	body := helps.TranslateRequestWithCodexMultiAgentV2(ctx, opts.Headers, e.cfg, from, to, baseModel, req.Payload, upstreamStream)	body = helps.SetStringIfDifferent(body, "model", upstreamModel) 	body, err = helps.ApplyRequestThinking(body, req, opts, from.String(), to.String(), e.Identifier())	if err != nil {		return resp, err	}	if rebuildMidSystemMessageEnabled(e.cfg, auth) {		body = rebuildMidSystemMessagesToTopLevel(body)	} 	// Apply cloaking (system prompt injection, fake user ID, sensitive word obfuscation)	// based on client type and configuration.	body, err = applyCloaking(ctx, e.cfg, auth, body, baseModel, apiKey)	if err != nil {		return resp, err	} 	requestedModel := helps.PayloadRequestedModel(opts, req.Model)	requestPath := helps.PayloadRequestPath(opts)	body = helps.ApplyPayloadConfigWithRequest(e.cfg, baseModel, to.String(), from.String(), "", body, originalTranslated, requestedModel, requestPath, opts.Headers)	body = ensureModelMaxTokens(body, baseModel) 	// Disable thinking if tool_choice forces tool use (Anthropic API constraint)	body = disableThinkingIfToolChoiceForced(body)	body = normalizeClaudeSamplingForUpstream(body) 	// Auto-inject cache_control if missing (optimization for ClawdBot/clients without caching support)	if countCacheControls(body) == 0 {		body = ensureCacheControl(body)	} 	// Enforce Anthropic's cache_control block limit (max 4 breakpoints per request).	// Cloaking and ensureCacheControl may push the total over 4 when the client	// already sends multiple cache_control blocks.	body = enforceCacheControlLimit(body, 4) 	// Normalize TTL values to prevent ordering violations under prompt-caching-scope-2026-01-05.	// A 1h-TTL block must not appear after a 5m-TTL block in evaluation order (tools→system→messages).	body = normalizeCacheControlTTL(body)	// Payload rules and other request processing may rewrite stream. Keep the	// upstream body, transport headers, and response parser on one authority.	body = helps.SetBoolIfDifferent(body, "stream", upstreamStream) 	// Extract betas from body and convert to header	var extraBetas []string	extraBetas, body = extractAndRemoveBetas(body)	bodyForTranslation := body	bodyForUpstream := body	oauthToken := isClaudeOAuthToken(apiKey)	var oauthToolNamesReverseMap map[string]string	if oauthToken {		bodyForUpstream, oauthToolNamesReverseMap = prepareClaudeOAuthToolNamesForUpstream(bodyForUpstream, claudeToolPrefix, auth.ToolPrefixDisabled())	}	bodyForUpstream = sanitizeClaudeMessagesForClaudeUpstreamWithDebug(ctx, bodyForUpstream, baseModel)	// Enable cch signing by default for OAuth tokens (not just experimental flag).	// Claude Code always computes cch; missing or invalid cch is a detectable fingerprint.	if oauthToken || experimentalCCHSigningEnabled(e.cfg, auth) {		bodyForUpstream = signAnthropicMessagesBody(bodyForUpstream)	}	reporter.SetTranslatedReasoningEffort(bodyForUpstream, to.String()) 	url := fmt.Sprintf("%s/v1/messages?beta=true", baseURL)	httpReq, err := http.NewRequestWithContext(ctx, http.MethodPost, url, bytes.NewReader(bodyForUpstream))	if err != nil {		return resp, err	}	if errHeaders := applyClaudeHeaders(httpReq, auth, apiKey, upstreamStream, extraBetas, e.cfg, opts.Headers); errHeaders != nil {		return resp, errHeaders	}	var authID, authLabel, authType, authValue string	if auth != nil {		authID = auth.ID		authLabel = auth.Label		authType, authValue = auth.AccountInfo()	}	helps.RecordAPIRequest(ctx, e.cfg, helps.UpstreamRequestLog{		URL:       url,		Method:    http.MethodPost,		Headers:   httpReq.Header.Clone(),		Body:      bodyForUpstream,		Provider:  e.upstreamRequestLogProvider(),		AuthID:    authID,		AuthLabel: authLabel,		AuthType:  authType,		AuthValue: authValue,	}) 	httpClient := helps.NewUtlsHTTPClient(ctx, e.cfg, auth, 0)	httpClient = reporter.TrackHTTPClient(httpClient)	httpResp, err := httpClient.Do(httpReq)	if err != nil {		helps.RecordAPIResponseError(ctx, e.cfg, err)		return resp, err	}	helps.RecordAPIResponseMetadata(ctx, e.cfg, httpResp.StatusCode, httpResp.Header.Clone())	if httpResp.StatusCode < 200 || httpResp.StatusCode >= 300 {		// Decompress error responses — pass the Content-Encoding value (may be empty)		// and let decodeResponseBody handle both header-declared and magic-byte-detected		// compression.  This keeps error-path behaviour consistent with the success path.		errBody, decErr := decodeResponseBody(httpResp.Body, httpResp.Header.Get("Content-Encoding"))		if decErr != nil {			helps.RecordAPIResponseError(ctx, e.cfg, decErr)			msg := fmt.Sprintf("failed to decode error response body: %v", decErr)			helps.LogWithRequestID(ctx).Warn(msg)			return resp, statusErr{code: httpResp.StatusCode, msg: msg}		}		b, readErr := io.ReadAll(errBody)		if readErr != nil {			helps.RecordAPIResponseError(ctx, e.cfg, readErr)			msg := fmt.Sprintf("failed to read error response body: %v", readErr)			helps.LogWithRequestID(ctx).Warn(msg)			b = []byte(msg)		}		helps.AppendAPIResponseChunk(ctx, e.cfg, b)		helps.LogWithRequestID(ctx).Debugf("request error, error status: %d, error message: %s", httpResp.StatusCode, helps.SummarizeErrorBody(httpResp.Header.Get("Content-Type"), b))		err = statusErr{code: httpResp.StatusCode, msg: string(b)}		if errClose := errBody.Close(); errClose != nil {			log.Errorf("response body close error: %v", errClose)		}		return resp, err	}	decodedBody, err := decodeResponseBody(httpResp.Body, httpResp.Header.Get("Content-Encoding"))	if err != nil {		helps.RecordAPIResponseError(ctx, e.cfg, err)		if errClose := httpResp.Body.Close(); errClose != nil {			log.Errorf("response body close error: %v", errClose)		}		return resp, err	}	defer func() {		if errClose := decodedBody.Close(); errClose != nil {			log.Errorf("response body close error: %v", errClose)		}	}()	data, err := io.ReadAll(decodedBody)	if err != nil {		helps.RecordAPIResponseError(ctx, e.cfg, err)		return resp, err	}	helps.AppendAPIResponseChunk(ctx, e.cfg, data)	if upstreamStream {		if errValidate := validateClaudeStreamingResponse(data); errValidate != nil {			helps.RecordAPIResponseError(ctx, e.cfg, errValidate)			return resp, errValidate		}		lines := bytes.Split(data, []byte("\n"))		for i, line := range lines {			if detail, ok := helps.ParseClaudeStreamUsage(line); ok {				reporter.Publish(ctx, detail)			}			lines[i] = restoreClaudeOAuthToolNamesFromStreamLine(line, claudeToolPrefix, auth.ToolPrefixDisabled(), oauthToolNamesReverseMap)		}		data = bytes.Join(lines, []byte("\n"))	} else {		reporter.Publish(ctx, helps.ParseClaudeUsage(data))		data = restoreClaudeOAuthToolNamesFromResponse(data, claudeToolPrefix, auth.ToolPrefixDisabled(), oauthToolNamesReverseMap)	}	data = e.restoreResponseModel(data, req.Model)	var param any	out := sdktranslator.TranslateNonStream(		ctx,		to,		responseFormat,		req.Model,		opts.OriginalRequest,		bodyForTranslation,		data,		&param,	)	resp = cliproxyexecutor.Response{Payload: out, Headers: httpResp.Header.Clone()}	return resp, nil}