import * as z from "zod/mini";

export const SCOPE_IDS: readonly [
	"functionality.storage",
	"security.storage",
	"analytics.storage",
	"analytics.measurement",
	"personalization.storage",
	"ads.storage",
	"ads.user_data",
	"ads.personalization",
] = [
	"functionality.storage",
	"security.storage",
	"analytics.storage",
	"analytics.measurement",
	"personalization.storage",
	"ads.storage",
	"ads.user_data",
	"ads.personalization",
];

export const scopeIdSchema = z.enum(SCOPE_IDS);

export type Scope = (typeof SCOPE_IDS)[number];

export function isScope(value: unknown): value is Scope {
	return scopeIdSchema.safeParse(value).success;
}

export type ScopeMeta = {
	description: string;
};

const scopeMetaById: Record<Scope, ScopeMeta> = {
	"functionality.storage": {
		description:
			"Allow essential storage for core widget behavior (e.g., frequency capping, dismissals, draft answers).",
	},
	"security.storage": {
		description:
			"Allow storage used for fraud/abuse prevention and integrity checks.",
	},
	"analytics.storage": {
		description:
			"Allow storage for analytics identifiers enabling consistent cross-session measurement.",
	},
	"analytics.measurement": {
		description:
			"Allow sending analytics events; can operate without storage when needed.",
	},
	"personalization.storage": {
		description:
			"Allow storage used to personalize the widget UI/targeting (non-ads).",
	},
	"ads.storage": {
		description:
			"Allow storage for advertising identifiers and conversion cookies.",
	},
	"ads.user_data": {
		description:
			"Allow sending user data to ad platforms when legally permitted.",
	},
	"ads.personalization": {
		description:
			"Allow personalized advertising signals and interest-based targeting.",
	},
};

export function getScopeMeta(id: Scope): ScopeMeta {
	return scopeMetaById[id];
}

export function listScopes(): ReadonlyArray<{ id: Scope } & ScopeMeta> {
	return SCOPE_IDS.map((id) => ({
		id,
		...getScopeMeta(id),
	}));
}