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import { z } from 'zod';
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export const CHANNEL_PROFILES = [
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  { dataChannelName: 'robot', ordered: true },
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  { dataChannelName: 'spectrum', ordered: false, maxRetransmits: 0 },
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] as const;
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// The SFU may return only id/name. Reliability is our requested configuration,
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// not a mandatory echo in its response. Reject an explicit conflicting setting.
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export const channelSchema = z
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  .object({
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    id: z.number().int().min(0).max(65534),
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    dataChannelName: z.enum(['robot', 'spectrum']),
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    ordered: z.boolean().optional(),
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    maxRetransmits: z.number().int().nonnegative().optional(),
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  })
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  .refine(
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    (channel) =>
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      channel.ordered === undefined || channel.ordered === (channel.dataChannelName === 'robot'),
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  )
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  .refine(
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    (channel) =>
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      channel.maxRetransmits === undefined ||
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      (channel.dataChannelName === 'spectrum' && channel.maxRetransmits === 0),
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  )
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  .transform((channel) => ({
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    id: channel.id,
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    ...CHANNEL_PROFILES.find((profile) => profile.dataChannelName === channel.dataChannelName)!,
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  }));
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export const channelListSchema = z
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  .array(channelSchema)
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  .length(2)
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  .refine(
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    (channels) =>
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      new Set(channels.map((channel) => channel.id)).size === 2 &&
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      new Set(channels.map((channel) => channel.dataChannelName)).size === 2,
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  );
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export const channelsSchema = z.object({ channels: channelListSchema });
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export type Channel = z.infer<typeof channelSchema>;