edition

type ContentBlock struct {
	Type string
	Text string
}

type Hooks struct {
	// --- identity ---
	Name         string // "open" (default) / overlay identifier
	ScenarioCode string // injected into x-dingtalk-scenario-code header

	// --- runtime mode ---
	IsEmbedded     bool // true when running inside a host application
	HideAuthLogin  bool // true suppresses the "dws auth login" command
	AutoPurgeToken bool // true deletes local token data on expiry

	// --- paths ---
	ConfigDir func() string // custom config directory; nil → ~/.dws

	// --- HTTP headers ---
	MergeHeaders func(base map[string]string) map[string]string

	// --- auth ---
	AuthClientID      string // OAuth client ID for device-flow authorisation
	AuthClientFromMCP bool   // true → fetch client ID from MCP at runtime
	OnAuthError       func(configDir string, err error) error
	TokenProvider     func(ctx context.Context, fallback func() (string, error)) (string, error)

	// --- token persistence (overlay-managed keychain / encrypted storage) ---
	SaveToken   func(configDir string, data []byte) error // persist token blob
	LoadToken   func(configDir string) ([]byte, error)    // retrieve token blob
	DeleteToken func(configDir string) error              // remove persisted token

	// --- product & endpoint ---
	StaticServers         func() []ServerInfo                          // non-nil → skip Market discovery
	VisibleProducts       func() []string                              // non-nil → override help visibility
	RegisterExtraCommands func(root *cobra.Command, caller ToolCaller) // register overlay-only commands

	// DiscoveryURL overrides the Market API endpoint for server list.
	// Non-empty → loadDynamicCommands uses FetchServersFromURL(DiscoveryURL)
	// instead of the default Market base URL. Provides edition-level isolation.
	DiscoveryURL string

	// DiscoveryHeaders returns HTTP headers injected into discovery requests.
	// Used to authenticate edition-specific endpoints.
	DiscoveryHeaders func() map[string]string

	// SupplementServers returns edition-specific MCP servers NOT registered
	// in any Market registry. Always merged into the endpoint map alongside
	// Market/cache results, regardless of discovery success or failure.
	SupplementServers func() []ServerInfo

	// FallbackServers returns the full server list as a safety net when
	// Market discovery + cache both fail. Results are NOT cached so the
	// next startup still attempts live discovery.
	FallbackServers func() []ServerInfo

	// AfterPersistentPreRun runs at the end of the root PersistentPreRunE after
	// global setup (OAuth flag overrides, log level, output sink). Overlays use
	// this for clients that bypass the MCP runner (e.g. A2A gateway).
	AfterPersistentPreRun func(cmd *cobra.Command, args []string) error

	// ClassifyToolResult is called before the framework's default business-error
	// detection on MCP tool results. If it returns a non-nil error, that error
	// is used instead of the generic CategoryAPI business error. Editions use
	// this to return custom error types with specific exit codes (e.g. PAT
	// authorization errors with exit code 4).
	ClassifyToolResult func(content map[string]any) error

	// RuntimeDefaults returns resolvers for runtimeDefault placeholders (e.g.
	// "$currentUserId" → fn). Placeholders not in the map fall through to a
	// "not registered" warning. Open-source core returns an empty map;
	// overlays populate the whitelist ($currentUserId / $unionId / $corpId /
	// $now / $today). See schema v3 §2.3.
	RuntimeDefaults func() map[string]RuntimeDefaultFn
}

type RuntimeDefaultFn func(ctx context.Context) (string, bool)

type ServerInfo struct {
	ID       string
	Name     string
	Endpoint string
	Prefixes []string
}

type ToolCaller interface {
	// CallTool invokes an MCP tool by product ID and tool name.
	CallTool(ctx context.Context, productID, toolName string, args map[string]any) (*ToolResult, error)
	// Format returns the current output format ("json", "table", "raw").
	Format() string
	// DryRun returns true when --dry-run is active.
	DryRun() bool
}

type ToolResult struct {
	Content []ContentBlock
}