export const CREATE_GOAL_TOOL_NAME = "create_goal";
export const GET_GOAL_TOOL_NAME = "get_goal";
export const UPDATE_GOAL_TOOL_NAME = "update_goal";
export const SET_GOAL_TASKS_TOOL_NAME = "set_goal_tasks";
export const UPDATE_GOAL_TASK_TOOL_NAME = "update_goal_task";
export const PROPOSE_DRAFT_TOOL_NAME = "propose_goal_draft";

/** The stable core model surface: three tools, installed without phase-dependent sync. */
export const CORE_GOAL_TOOL_NAMES = [CREATE_GOAL_TOOL_NAME, GET_GOAL_TOOL_NAME, UPDATE_GOAL_TOOL_NAME] as const;

/** The two consolidated task tools advertised when tasks are enabled. */
export const TASK_TOOL_NAMES = [SET_GOAL_TASKS_TOOL_NAME, UPDATE_GOAL_TASK_TOOL_NAME] as const;

/** Fixed task-enabled profile: all five registered goal tools. */
export const FIVE_GOAL_TOOLS = [...CORE_GOAL_TOOL_NAMES, ...TASK_TOOL_NAMES] as const;

/** Fixed task-disabled profile: the three core tools. */
export const CORE_GOAL_TOOLS = CORE_GOAL_TOOL_NAMES;

/**
 * Drafting-only tools. Registered once like every other goal tool (the model
 * surface is constant for the whole session); the draft gate is enforced by
 * their own execute() guards, not by a phase-dependent tool list. Structured
 * clarification during drafting is delegated to pi-ask's `ask_user` when that
 * package is installed, so no questionnaire tool is registered here.
 */
export const DRAFTING_GOAL_TOOLS = [PROPOSE_DRAFT_TOOL_NAME] as const;

/** Every goal tool this extension registers (used by installGoalTools). */
export const ALL_REGISTERED_GOAL_TOOLS = [...FIVE_GOAL_TOOLS, ...DRAFTING_GOAL_TOOLS] as const;

/**
 * Goal tools that count as "real work" toward the active goal plus the common
 * host work tools. Used by the empty-turn continuation gate: if a non-tool-use
 * turn ends without any of these having been called, we do NOT queue the next
 * autoContinue.
 */
export const GOAL_WORK_TOOL_NAMES = [
	UPDATE_GOAL_TOOL_NAME,
	SET_GOAL_TASKS_TOOL_NAME,
	UPDATE_GOAL_TASK_TOOL_NAME,
	CREATE_GOAL_TOOL_NAME,
	GET_GOAL_TOOL_NAME,
	"write",
	"edit",
	"bash",
	"read",
	"grep",
	"find",
	"ls",
] as const;

/**
 * The subset of GOAL_WORK_TOOL_NAMES that indicates actual progress (excludes
 * read-only surface tools such as get_goal and create_goal).
 */
export const GOAL_PROGRESS_TOOL_NAMES = [
	UPDATE_GOAL_TOOL_NAME,
	UPDATE_GOAL_TASK_TOOL_NAME,
	"write",
	"edit",
	"bash",
	"read",
	"grep",
	"find",
	"ls",
] as const;

/** Tools the model may still call on a stopped turn (state reads only). */
export const POST_STOP_ALLOWED_TOOLS = ["get_goal"] as const;

/**
 * Guard text returned by the mutating execution tools while a guided goal
 * draft is active. With the tool surface constant (no drafting profile
 * switch), this guard — not the tool list — is what keeps draft conversations
 * from mutating goal state outside propose_goal_draft.
 */
export function executionToolDraftGuardMessage(): string {
	return "A guided goal draft is active. Do not mutate goal state directly: confirm or cancel the draft with propose_goal_draft first. get_goal remains available for read-only state checks.";
}