einoacp

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

type Config struct {
	// Command is the full command to launch the ACP agent.
	// The first element is the binary, the rest are arguments.
	// Use the provided helpers: ClaudeCommand(), CodexCommand().
	// Required, must have at least one element.
	Command []string

	// Cwd is the working directory for the agent session.
	// Defaults to the current working directory.
	Cwd string

	// Env sets additional environment variables for the agent subprocess.
	// These are merged with the current process environment.
	Env []string

	// AutoApprove automatically approves all permission requests from the agent.
	// When false, permission requests are denied.
	AutoApprove bool

	// OnPermission is called for every ACP permission request. When set, it
	// takes precedence over AutoApprove.
	OnPermission func(context.Context, acp.RequestPermissionRequest) (acp.RequestPermissionResponse, error)

	// OnSessionUpdate is called for every ACP SessionUpdate received during
	// execution. This fires in real-time regardless of whether Generate() or
	// Stream() is used, giving consumers access to tool calls, text chunks,
	// and other ACP events as they happen.
	OnSessionUpdate func(acp.SessionUpdate)

	// SelectModel is the ACP model id to switch to after each NewSession.
	// Empty = use the agent's default. Passing --model on the spawn
	// command line is unreliable: Claude Code ignores it in --acp mode and
	// the session stays on its default regardless.
	//
	// Model selection is done via the session config option mechanism:
	// the agent advertises a category="model" select option at session
	// creation and we switch by calling session/set_config_option. (The
	// old, unstable session/set_model RPC was removed from the protocol.)
	//
	// Per-CLI valid ids:
	//   Claude Code: "default" / "sonnet" / "haiku"
	//   GitHub Copilot: "auto" / "gpt-5.4" / "gpt-5.3-codex" / ...
	// Discoverable via the OnSessionInfo callback below. When SelectModel
	// is non-empty but not advertised by the agent, NewSession fails fast.
	SelectModel string

	// OnSessionInfo fires once per NewSession with the model + session id
	// information extracted from the agent's "model" config option. The
	// ModelConfig carries the *resolved* CurrentModelID (after applying
	// SelectModel, or the agent's default) and the full list of available
	// models with human-readable names + descriptions. nil when the agent
	// advertises no model selector.
	//
	// Use this to (a) surface the actual running model to a UI rather
	// than the alias the user picked, and (b) populate a model picker
	// dynamically without hardcoding a per-CLI list.
	//
	// Called BEFORE the first prompt is sent on the new session, so
	// callers can react to the model state synchronously if needed.
	OnSessionInfo func(sessionId acp.SessionId, models *ModelConfig)

	// McpServers is the list of MCP servers to attach to each ACP session.
	// Claude Code will discover and use tools from these servers.
	McpServers []acp.McpServer
}

type ModelConfig struct {
	// ConfigID is the SessionConfigId to target in a set_config_option call.
	ConfigID string
	// CurrentModelID is the value id the agent currently has selected.
	CurrentModelID string
	// Available is the flattened (grouped + ungrouped) list of selectable
	// models in advertised order.
	Available []ModelOption
}

type ModelOption struct {
	ID          string
	Name        string
	Description string
	// Meta carries the agent's per-option `_meta` extension payload (e.g.
	// Copilot's usage metadata), passed through verbatim for callers that
	// synthesize richer descriptions. nil when the agent reports none.
	Meta map[string]any
}