copilot

package
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 Go to latest Published: Dec 29, 2025 License: MIT Imports: 24 Imported by: 0

Documentation

Overview

Package copilot provides chat completion logic for GitHub Copilot AI provider.

Package copilot provides configuration and initialization for GitHub Copilot AI provider.

Package copilot provides error handling with RichError integration for the Copilot provider.

Package copilot provides a GitHub Copilot AI provider implementation. It includes support for chat completions, streaming, tool calling, and GitHub OAuth authentication.

Package copilot provides tool calling support for GitHub Copilot AI provider. Copilot uses OpenAI-compatible tool calling format.

Package copilot provides type definitions for GitHub Copilot AI provider.

Index

Constants

View Source 
const (
	// OAuth
	GitHubClientID    = "Iv1.b507a08c87ecfe98"
	GitHubOAuthScopes = "read:user"

	// GitHub Endpoints
	GitHubDeviceCodeURL   = "https://github.com/login/device/code"
	GitHubAccessTokenURL  = "https://github.com/login/oauth/access_token"
	GitHubVerificationURL = "https://github.com/login/device"
	GitHubAPIBaseURL      = "https://api.github.com"
	GitHubCopilotTokenURL = "https://api.github.com/copilot_internal/v2/token"
	GitHubCopilotUserURL  = "https://api.github.com/copilot_internal/user"

	// Copilot API Endpoints
	CopilotBaseURL           = "https://api.githubcopilot.com"
	CopilotBusinessBaseURL   = "https://api.business.githubcopilot.com"
	CopilotEnterpriseBaseURL = "https://api.enterprise.githubcopilot.com"

	// Version Information
	VSCodeVersion      = "1.104.3"
	CopilotChatVersion = "0.26.7"

	// Headers
	EditorPluginVersion    = "copilot-chat/0.26.7"
	UserAgent              = "GitHubCopilotChat/0.26.7"
	CopilotIntegrationID   = "vscode-chat"
	OpenAIIntent           = "conversation-panel"
	GitHubAPIVersion       = "2025-04-01"
	VSCodeUserAgentLibrary = "electron-fetch"

	// Token Management
	TokenRefreshBuffer = 60 // seconds before expiry to refresh

	// Defaults
	DefaultMaxTokens   = 4096
	DefaultTemperature = 1.0
	DefaultTopP        = 1.0
)

Constants for Copilot API

View Source 
const (
	AccountTypeIndividual = "individual"
	AccountTypeBusiness   = "business"
	AccountTypeEnterprise = "enterprise"
)

Account types

Variables

This section is empty.

Functions

func ConvertToolCallsFromDelta 

func ConvertToolCallsFromDelta(toolCalls []ToolCall) []types.ToolCall

ConvertToolCallsFromDelta converts streaming delta tool calls to internal format

func ConvertToolCallsFromResponse 

func ConvertToolCallsFromResponse(toolCalls []ToolCall) []types.ToolCall

ConvertToolCallsFromResponse converts Copilot tool calls to internal format

func ConvertToolChoice 

func ConvertToolChoice(toolChoice *types.ToolChoice) interface{}

ConvertToolChoice converts internal tool choice to Copilot/OpenAI format

func CreateCopilotProvider 

func CreateCopilotProvider(config types.ProviderConfig) (types.Provider, error)

CreateCopilotProvider creates a new Copilot provider instance

func FormatToolCallArguments 

func FormatToolCallArguments(args map[string]interface{}) (string, error)

FormatToolCallArguments formats tool call arguments as JSON string

func NewConnectivityCache 

func NewConnectivityCache() *connectivityCache

NewConnectivityCache creates a new connectivity cache

func NewModelCache 

func NewModelCache(ttl time.Duration) *modelCache

NewModelCache creates a new model cache

func ParseToolCallArguments 

func ParseToolCallArguments(args string) (map[string]interface{}, error)

ParseToolCallArguments parses tool call arguments from JSON string

func RegisterCopilotFactory 

func RegisterCopilotFactory(factory types.ProviderFactory)

RegisterCopilotFactory registers the Copilot provider with the factory

func ValidateToolDefinition 

func ValidateToolDefinition(tool types.Tool) error

ValidateToolDefinition validates a tool definition

Types

type ChatChoice 

type ChatChoice struct {
	Index        int         `json:"index"`
	Message      ChatMessage `json:"message"`
	FinishReason string      `json:"finish_reason"`
}

ChatChoice represents a choice in the response

type ChatCompletionChunk 

type ChatCompletionChunk struct {
	ID      string        `json:"id"`
	Object  string        `json:"object"`
	Created int64         `json:"created"`
	Model   string        `json:"model"`
	Choices []ChunkChoice `json:"choices"`
	Usage   *Usage        `json:"usage,omitempty"`
}

ChatCompletionChunk represents a streaming chunk

type ChatCompletionRequest 

type ChatCompletionRequest struct {
	Model            string        `json:"model"`
	Messages         []ChatMessage `json:"messages"`
	MaxTokens        int           `json:"max_tokens,omitempty"`
	Temperature      float64       `json:"temperature,omitempty"`
	TopP             float64       `json:"top_p,omitempty"`
	Stream           bool          `json:"stream,omitempty"`
	Stop             interface{}   `json:"stop,omitempty"` // string or []string
	Tools            []Tool        `json:"tools,omitempty"`
	ToolChoice       interface{}   `json:"tool_choice,omitempty"` // "none", "auto", "required", or ToolChoice
	FrequencyPenalty float64       `json:"frequency_penalty,omitempty"`
	PresencePenalty  float64       `json:"presence_penalty,omitempty"`
}

ChatCompletionRequest represents a chat completion request

type ChatCompletionResponse 

type ChatCompletionResponse struct {
	ID      string       `json:"id"`
	Object  string       `json:"object"`
	Created int64        `json:"created"`
	Model   string       `json:"model"`
	Choices []ChatChoice `json:"choices"`
	Usage   Usage        `json:"usage"`
}

ChatCompletionResponse represents a chat completion response

type ChatMessage 

type ChatMessage struct {
	Role       string      `json:"role"`
	Content    interface{} `json:"content"` // Can be string or []ContentPart
	ToolCalls  []ToolCall  `json:"tool_calls,omitempty"`
	ToolCallID string      `json:"tool_call_id,omitempty"`
	Name       string      `json:"name,omitempty"`
}

ChatMessage represents a message in the chat conversation

func CreateAssistantToolCallMessage 

func CreateAssistantToolCallMessage(toolCalls []ToolCall, content string) ChatMessage

CreateAssistantToolCallMessage creates an assistant message with tool calls

func CreateToolResponseMessage 

func CreateToolResponseMessage(toolCallID, content string) ChatMessage

CreateToolResponseMessage creates a tool response message for the API

type ChunkChoice 

type ChunkChoice struct {
	Index        int          `json:"index"`
	Delta        DeltaMessage `json:"delta"`
	FinishReason *string      `json:"finish_reason"`
}

ChunkChoice represents a choice in a streaming chunk

type ContentPart 

type ContentPart struct {
	Type     string    `json:"type"` // "text" or "image_url"
	Text     string    `json:"text,omitempty"`
	ImageURL *ImageURL `json:"image_url,omitempty"`
}

ContentPart represents a part of multimodal content

type CopilotConfig 

type CopilotConfig struct {
	DisplayName string `json:"display_name,omitempty"`
	// GitHub token (from OAuth device flow)
	GitHubToken string `json:"github_token,omitempty"`
	// Copilot API token (auto-refreshed)
	CopilotToken string `json:"copilot_token,omitempty"`
	// Account type: individual, business, or enterprise
	AccountType string `json:"account_type,omitempty"`
	// Base URL override
	BaseURL string `json:"base_url,omitempty"`
	// Default model
	Model string `json:"model,omitempty"`
}

CopilotConfig represents Copilot-specific configuration

type CopilotErrorDetail 

type CopilotErrorDetail struct {
	Message string `json:"message"`
	Type    string `json:"type"`
	Code    string `json:"code,omitempty"`
}

CopilotErrorDetail represents the error details in a Copilot API response.

type CopilotErrorResponse 

type CopilotErrorResponse struct {
	Error *CopilotErrorDetail `json:"error,omitempty"`
}

CopilotErrorResponse represents a Copilot API error response.

type CopilotProvider 

type CopilotProvider struct {
	*base.BaseProvider
	// contains filtered or unexported fields
}

CopilotProvider implements the Provider interface for GitHub Copilot

func NewCopilotProvider 

func NewCopilotProvider(config types.ProviderConfig) *CopilotProvider

NewCopilotProvider creates a new Copilot provider

func (*CopilotProvider) Authenticate 

func (p *CopilotProvider) Authenticate(ctx context.Context, authConfig types.AuthConfig) error

Authenticate handles authentication with GitHub OAuth device flow

func (*CopilotProvider) Configure 

func (p *CopilotProvider) Configure(config types.ProviderConfig) error

Configure updates the provider configuration

func (*CopilotProvider) Description 

func (p *CopilotProvider) Description() string

Description returns a description of the provider

func (*CopilotProvider) GenerateChatCompletion 

func (p *CopilotProvider) GenerateChatCompletion(
	ctx context.Context,
	options types.GenerateOptions,
) (types.ChatCompletionStream, error)

GenerateChatCompletion generates a chat completion

func (*CopilotProvider) GetAuthStatus 

func (p *CopilotProvider) GetAuthStatus() map[string]interface{}

GetAuthStatus provides detailed authentication status

func (*CopilotProvider) GetBaseURL 

func (p *CopilotProvider) GetBaseURL() string

GetBaseURL returns the appropriate base URL based on account type or custom base URL

func (*CopilotProvider) GetConfig 

func (p *CopilotProvider) GetConfig() types.ProviderConfig

GetConfig returns the current provider configuration

func (*CopilotProvider) GetCopilotToken 

func (p *CopilotProvider) GetCopilotToken(ctx context.Context) (string, error)

GetCopilotToken returns the current Copilot token, refreshing if necessary

func (*CopilotProvider) GetDefaultModel 

func (p *CopilotProvider) GetDefaultModel() string

GetDefaultModel returns the default model for the provider

func (*CopilotProvider) GetModels 

func (p *CopilotProvider) GetModels(ctx context.Context) ([]types.Model, error)

GetModels returns the list of available models

func (*CopilotProvider) GetToolFormat 

func (p *CopilotProvider) GetToolFormat() types.ToolFormat

GetToolFormat returns the OpenAI tool format (Copilot is OpenAI-compatible)

func (*CopilotProvider) HealthCheck 

func (p *CopilotProvider) HealthCheck(ctx context.Context) error

HealthCheck performs a health check on the provider

func (*CopilotProvider) InvokeServerTool 

func (p *CopilotProvider) InvokeServerTool(
	ctx context.Context,
	toolName string,
	params interface{},
) (interface{}, error)

InvokeServerTool invokes a server tool (not yet implemented for Copilot)

func (*CopilotProvider) IsAPIKeyConfigured 

func (p *CopilotProvider) IsAPIKeyConfigured() bool

IsAPIKeyConfigured checks if API key authentication is properly configured For Copilot, this means having a valid Copilot token

func (*CopilotProvider) IsAuthenticated 

func (p *CopilotProvider) IsAuthenticated() bool

IsAuthenticated checks if the provider is authenticated

func (*CopilotProvider) IsAuthenticationError 

func (p *CopilotProvider) IsAuthenticationError(err error) bool

IsAuthenticationError checks if an error is authentication-related.

func (*CopilotProvider) IsClientError 

func (p *CopilotProvider) IsClientError(err error) bool

IsClientError checks if an error is a client-side error that won't be fixed by retrying.

func (*CopilotProvider) IsOAuthConfigured 

func (p *CopilotProvider) IsOAuthConfigured() bool

IsOAuthConfigured checks if OAuth authentication is properly configured

func (*CopilotProvider) IsRetryableError 

func (p *CopilotProvider) IsRetryableError(err error) bool

IsRetryableError checks if an error is potentially retryable. This works with both RichError and standard errors.

func (*CopilotProvider) Logout 

func (p *CopilotProvider) Logout(ctx context.Context) error

Logout clears the authentication credentials

func (*CopilotProvider) Name 

func (p *CopilotProvider) Name() string

Name returns the display name of the provider

func (*CopilotProvider) RefreshAllOAuthTokens 

func (p *CopilotProvider) RefreshAllOAuthTokens(ctx context.Context) error

RefreshAllOAuthTokens refreshes the Copilot token

func (*CopilotProvider) SetCredentialProvider 

func (p *CopilotProvider) SetCredentialProvider(provider types.CredentialProvider)

SetCredentialProvider sets a dynamic credential provider for OAuth credentials

func (*CopilotProvider) SupportsResponsesAPI 

func (p *CopilotProvider) SupportsResponsesAPI() bool

SupportsResponsesAPI returns false as Copilot doesn't support the Responses API

func (*CopilotProvider) SupportsStreaming 

func (p *CopilotProvider) SupportsStreaming() bool

SupportsStreaming returns true if the provider supports streaming

func (*CopilotProvider) SupportsToolCalling 

func (p *CopilotProvider) SupportsToolCalling() bool

SupportsToolCalling returns true if the provider supports tool calling

func (*CopilotProvider) TestConnectivity 

func (p *CopilotProvider) TestConnectivity(ctx context.Context) error

TestConnectivity performs a lightweight connectivity test

func (*CopilotProvider) TestConnectivityWithOptions 

func (p *CopilotProvider) TestConnectivityWithOptions(ctx context.Context, bypassCache bool) error

TestConnectivityWithOptions performs a connectivity test with optional cache bypass

func (*CopilotProvider) ToProviderError 

func (p *CopilotProvider) ToProviderError(richErr error) *types.ProviderError

ToProviderError converts a RichError to types.ProviderError for backward compatibility.

func (*CopilotProvider) Type 

func (p *CopilotProvider) Type() types.ProviderType

Type returns the provider type

type CopilotStream 

type CopilotStream struct {
	// contains filtered or unexported fields
}

CopilotStream implements ChatCompletionStream for Copilot SSE streaming

func NewCopilotStream 

func NewCopilotStream(resp *http.Response) *CopilotStream

NewCopilotStream creates a new Copilot stream

func (*CopilotStream) Close 

func (s *CopilotStream) Close() error

Close closes the stream

func (*CopilotStream) Next 

func (s *CopilotStream) Next() (types.ChatCompletionChunk, error)

Next returns the next chunk from the stream

type CopilotTokenResponse 

type CopilotTokenResponse struct {
	Token     string `json:"token"`
	ExpiresAt int64  `json:"expires_at"`
	RefreshIn int    `json:"refresh_in"`
}

CopilotTokenResponse represents the response from Copilot token endpoint

type DeltaMessage 

type DeltaMessage struct {
	Role      string     `json:"role,omitempty"`
	Content   string     `json:"content,omitempty"`
	ToolCalls []ToolCall `json:"tool_calls,omitempty"`
}

DeltaMessage represents a delta in streaming

type ErrorDetail 

type ErrorDetail struct {
	Message string `json:"message"`
	Type    string `json:"type"`
}

ErrorDetail represents error details

type ErrorResponse 

type ErrorResponse struct {
	Error ErrorDetail `json:"error"`
}

ErrorResponse represents an error response

type GitHubAccessTokenResponse 

type GitHubAccessTokenResponse struct {
	AccessToken      string `json:"access_token"`
	TokenType        string `json:"token_type"`
	Scope            string `json:"scope"`
	Error            string `json:"error,omitempty"`
	ErrorDescription string `json:"error_description,omitempty"`
}

GitHubAccessTokenResponse represents the response from GitHub access token endpoint

type GitHubDeviceCodeResponse 

type GitHubDeviceCodeResponse struct {
	DeviceCode      string `json:"device_code"`
	UserCode        string `json:"user_code"`
	VerificationURI string `json:"verification_uri"`
	ExpiresIn       int    `json:"expires_in"`
	Interval        int    `json:"interval"`
}

GitHubDeviceCodeResponse represents the response from GitHub device code endpoint

type ImageURL 

type ImageURL struct {
	URL    string `json:"url"`
	Detail string `json:"detail,omitempty"` // "low", "high", or "auto"
}

ImageURL represents an image URL for vision

type ModelCapabilities 

type ModelCapabilities struct {
	Object    string        `json:"object"`
	Family    string        `json:"family"`
	Limits    ModelLimits   `json:"limits"`
	Supports  ModelSupports `json:"supports"`
	Tokenizer string        `json:"tokenizer"`
	Type      string        `json:"type"`
}

ModelCapabilities represents model capabilities

type ModelData 

type ModelData struct {
	ID                 string            `json:"id"`
	Object             string            `json:"object"`
	Created            int64             `json:"created"`
	OwnedBy            string            `json:"owned_by"`
	Name               string            `json:"name"`
	Vendor             string            `json:"vendor"`
	Version            string            `json:"version"`
	Preview            bool              `json:"preview"`
	ModelPickerEnabled bool              `json:"model_picker_enabled"`
	Capabilities       ModelCapabilities `json:"capabilities"`
}

ModelData represents a model in the models list

type ModelLimits 

type ModelLimits struct {
	MaxContextWindowTokens int `json:"max_context_window_tokens"`
	MaxOutputTokens        int `json:"max_output_tokens"`
	MaxPromptTokens        int `json:"max_prompt_tokens"`
}

ModelLimits represents model limits

type ModelSupports 

type ModelSupports struct {
	ToolCalls         bool `json:"tool_calls"`
	ParallelToolCalls bool `json:"parallel_tool_calls"`
}

ModelSupports represents what the model supports

type ModelsResponse 

type ModelsResponse struct {
	Object string      `json:"object"`
	Data   []ModelData `json:"data"`
}

ModelsResponse represents the response from the models endpoint

type Tool 

type Tool struct {
	Type     string       `json:"type"` // "function"
	Function ToolFunction `json:"function"`
}

Tool represents a tool definition

func ConvertTools 

func ConvertTools(tools []types.Tool) []Tool

ConvertTools converts internal tools to Copilot/OpenAI format

type ToolCall 

type ToolCall struct {
	ID       string           `json:"id"`
	Type     string           `json:"type"` // "function"
	Function ToolCallFunction `json:"function"`
}

ToolCall represents a tool call in a response

type ToolCallBuilder 

type ToolCallBuilder struct {
	// contains filtered or unexported fields
}

ToolCallBuilder helps build tool call responses

func NewToolCallBuilder 

func NewToolCallBuilder() *ToolCallBuilder

NewToolCallBuilder creates a new tool call builder

func (*ToolCallBuilder) AddToolCall 

func (b *ToolCallBuilder) AddToolCall(id, name, arguments string) *ToolCallBuilder

AddToolCall adds a tool call to the builder

func (*ToolCallBuilder) AddToolCallWithMap 

func (b *ToolCallBuilder) AddToolCallWithMap(id, name string, arguments map[string]interface{}) (*ToolCallBuilder, error)

AddToolCallWithMap adds a tool call with arguments as a map

func (*ToolCallBuilder) Build 

func (b *ToolCallBuilder) Build() []ToolCall

Build returns the tool calls

func (*ToolCallBuilder) ToInternal 

func (b *ToolCallBuilder) ToInternal() []types.ToolCall

ToInternal converts to internal tool call format

type ToolCallFunction 

type ToolCallFunction struct {
	Name      string `json:"name"`
	Arguments string `json:"arguments"`
}

ToolCallFunction represents a function call

type ToolChoice 

type ToolChoice struct {
	Type     string             `json:"type"` // "function"
	Function ToolChoiceFunction `json:"function"`
}

ToolChoice represents a specific tool choice

type ToolChoiceFunction 

type ToolChoiceFunction struct {
	Name string `json:"name"`
}

ToolChoiceFunction represents a function choice

type ToolFunction 

type ToolFunction struct {
	Name        string                 `json:"name"`
	Description string                 `json:"description,omitempty"`
	Parameters  map[string]interface{} `json:"parameters"`
}

ToolFunction represents a function definition

type ToolValidationError 

type ToolValidationError struct {
	Message string
	Cause   error
}

ToolValidationError represents a tool validation error

func (*ToolValidationError) Error 

func (e *ToolValidationError) Error() string

type Usage 

type Usage struct {
	PromptTokens     int `json:"prompt_tokens"`
	CompletionTokens int `json:"completion_tokens"`
	TotalTokens      int `json:"total_tokens"`
}

Usage represents token usage information

Source Files

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