export type HudSurface = "statusline" | "footer";
export type LineLayout = "expanded" | "compact";
export type ModelFamily = "openai" | "claude" | "other";
export type HudElement = "project" | "identity" | "usage" | "tools" | "agents" | "session";

export type HudConfig = {
	enabled: boolean;
	surface: HudSurface;
	lineLayout: LineLayout;
	showSeparators: boolean;
	pathLevels: 1 | 2 | 3;
	elementOrder: HudElement[];
	display: {
		showProject: boolean;
		showContextBar: boolean;
		showUsage: boolean;
		showLimits: boolean;
		showTools: boolean;
		showAgents: boolean;
		showSession: boolean;
		showSessionTokens: boolean;
		showSpeed: boolean;
		showCost: boolean;
	};
};

export type ToolRun = {
	id: string;
	name: string;
	target?: string;
	startedAt: number;
	isAgent: boolean;
};

export type FinishedTool = {
	name: string;
	ok: boolean;
	elapsedMs: number;
};

export type HudState = {
	sessionStartedAt: number;
	agentStartedAt?: number;
	turnStartedAt?: number;
	assistantTurnActive: boolean;
	turns: number;
	activeTools: Map<string, ToolRun>;
	toolCounts: Map<string, number>;
	failedToolCounts: Map<string, number>;
	lastTool?: FinishedTool;
	agentCompleted: number;
	agentFailed: number;
	lastOutputSpeed?: number;
};

export type SessionStats = {
	inputTokens: number;
	outputTokens: number;
	cacheReadTokens: number;
	cacheWriteTokens: number;
	totalTokens: number;
	cost: number;
};

export type ModelInfo = {
	family: ModelFamily;
	provider: string;
	label: string;
	contextWindow: number;
	maxOutputTokens: number;
	reasoning: boolean;
};

export type ContextInfo = {
	tokens: number;
	window: number;
	percent: number | null;
	remainingTokens: number | null;
};

export type UsageLimitWindow = {
	label: string;
	usedPercent: number;
	resetAt?: number;
	limitReached?: boolean;
	allowed?: boolean;
};

export type ProviderLimitInfo = {
	source: "codex-rollout" | "codex-log" | "unavailable";
	windows: UsageLimitWindow[];
	note?: string;
};

export type GitInfo = {
	branch: string | null;
	dirty: boolean;
	ahead: number;
	behind: number;
	fileStats?: {
		modified: number;
		added: number;
		deleted: number;
		untracked: number;
	};
};