/*
	SPDX-FileCopyrightText: © 2025 Hornwitser <code@hornwitser.no>
	SPDX-License-Identifier: AGPL-3.0-or-later
*/
import { z } from "zod/v4-mini";
import { idSchema, type Id } from "~/shared/types/common";

export const apiEntitySchema = z.object({
	id: idSchema,
	updatedAt: z.string(),
	deleted: z.optional(z.literal(false)),
});
export type ApiEntity = z.infer<typeof apiEntitySchema>;

export function defineApiEntity<T extends {}>(fields: T) {
	return z.extend(apiEntitySchema, fields);
}

export function tombstonable<T extends z.ZodMiniObject>(entitySchema: T) {
	return z.discriminatedUnion("deleted", [entitySchema, apiTombstoneSchema]);
}

export const apiTombstoneSchema = z.object({
	id: idSchema,
	updatedAt: z.string(),
	deleted: z.literal(true),
});
export type ApiTombstone = z.infer<typeof apiTombstoneSchema>;

export const apiUserTypeSchema = z.union([
	z.literal("anonymous"),
	z.literal("regular"),
	z.literal("crew"),
	z.literal("admin"),
])
export type ApiUserType = z.infer<typeof apiUserTypeSchema>;

export interface ApiAccount {
	id: Id,
	updatedAt: string,
	type: ApiUserType,
	/** Name of the account. Not present on anonymous accounts */
	name?: string,
	interestedEventIds?: number[],
	interestedEventSlotIds?: number[],
	timezone?: string,
	locale?: string,
}

export const apiAccountPatchSchema = z.object({
	name: z.optional(z.string()),
	interestedEventIds: z.optional(z.array(z.number())),
	interestedEventSlotIds: z.optional(z.array(z.number())),
	timezone: z.optional(z.string()),
	locale: z.optional(z.string()),
});
export type ApiAccountPatch = z.infer<typeof apiAccountPatchSchema>;

export const apiSubscriptionSchema = z.object({
	type: z.literal("push"),
	sessionId: z.number(),
	push: z.object({
		endpoint: z.optional(z.string()),
		expirationTime: z.nullish(z.number()),
		keys: z.record(z.string(), z.string()),
	}),
});
export type ApiSubscription = z.infer<typeof apiSubscriptionSchema>;

export interface ApiSession {
	id: Id,
	account?: ApiAccount,
	push: boolean,
}

export const apiScheduleLocationSchema = defineApiEntity({
	name: z.string(),
	description: z.optional(z.string()),
});
export type ApiScheduleLocation = z.infer<typeof apiScheduleLocationSchema>;

export const apiScheduleEventSlotSchema = z.object({
	id: idSchema,
	start: z.string(),
	end: z.string(),
	locationIds: z.array(idSchema),
	assigned: z.optional(z.array(z.number())),
	interested: z.optional(z.number()),
});
export type ApiScheduleEventSlot = z.infer<typeof apiScheduleEventSlotSchema>;

export const apiScheduleEventSchema = defineApiEntity({
	name: z.string(),
	crew: z.optional(z.boolean()),
	host: z.optional(z.string()),
	cancelled: z.optional(z.boolean()),
	description: z.optional(z.string()),
	interested: z.optional(z.number()),
	slots: z.array(apiScheduleEventSlotSchema),
});
export type ApiScheduleEvent = z.infer<typeof apiScheduleEventSchema>;

export const apiScheduleRoleSchema = defineApiEntity({
	name: z.string(),
	description: z.optional(z.string()),
});
export type ApiScheduleRole = z.infer<typeof apiScheduleRoleSchema>;

export const apiScheduleShiftSlotSchema = z.object({
	id: idSchema,
	start: z.string(),
	end: z.string(),
	assigned: z.optional(z.array(z.number())),
});
export type ApiScheduleShiftSlot = z.infer<typeof apiScheduleShiftSlotSchema>;

export const apiScheduleShiftSchema = defineApiEntity({
	roleId: z.optional(idSchema),
	name: z.string(),
	description: z.optional(z.string()),
	slots: z.array(apiScheduleShiftSlotSchema),
});
export type ApiScheduleShift = z.infer<typeof apiScheduleShiftSchema>;

export const apiScheduleSchema = defineApiEntity({
	id: z.literal(111),
	locations: z.optional(z.array(tombstonable(apiScheduleLocationSchema))),
	events: z.optional(z.array(tombstonable(apiScheduleEventSchema))),
	roles: z.optional(z.array(tombstonable(apiScheduleRoleSchema))),
	shifts: z.optional(z.array(tombstonable(apiScheduleShiftSchema))),
});
export type ApiSchedule = z.infer<typeof apiScheduleSchema>;

export const apiUserSchema = defineApiEntity({
	type: apiUserTypeSchema,
	name: z.optional(z.string()),
});
export type ApiUser = z.infer<typeof apiUserSchema>;

export const apiUserPatchSchema = z.object({
	id: idSchema,
	type: z.optional(apiUserTypeSchema),
	name: z.optional(z.string()),
});
export type ApiUserPatch = z.infer<typeof apiUserPatchSchema>;

export interface ApiAccountUpdate {
	type: "account-update",
	data: ApiAccount,
}

export interface ApiConnected {
	type: "connected",
	session?: ApiSession,
}

export interface ApiScheduleUpdate {
	type: "schedule-update",
	updatedFrom?: string,
	data: ApiSchedule | ApiTombstone,
}

export interface ApiSessionExpired {
	type: "session-expired",
	sessionId: Id,
}

export interface ApiUserUpdate {
	type: "user-update",
	updatedFrom?: string,
	data: ApiUser | ApiTombstone,
}

export type ApiEvent =
	| ApiAccountUpdate
	| ApiConnected
	| ApiScheduleUpdate
	| ApiSessionExpired
	| ApiUserUpdate
;