import {z} from 'zod'

export type GetApiCapabilitiesCapabilityIdCapabilityVersionOptions = {baseUrl?: string | undefined, Bearer?: string | undefined, fetch?: typeof fetch | undefined};

export const attributeProperties = z.object({value: z.object({type: z.string().optional(), enum: z.array(z.string()).optional()}).and(z.record(z.string(), z.object({}))), unit: z.object({type: z.literal("string").optional(), enum: z.array(z.string()).optional(), default: z.string().optional()}).optional(), data: z.object({type: z.literal("object"), additionalProperties: z.boolean().optional(), required: z.array(z.string()).optional(), properties: z.object({}).optional()}).optional()});

export const attributeSchema = z.object({title: z.string().optional(), type: z.literal("object").optional(), properties: attributeProperties, sensitive: z.boolean().optional(), additionalProperties: z.literal(false).optional(), required: z.array(z.enum(["value", "unit", "data"])).optional()});

export const capabilityAttribute = z.object({schema: attributeSchema.optional(), setter: z.string().optional(), enumCommands: z.array(z.object({command: z.string(), value: z.string()})).optional()});

export const argument = z.object({name: z.string(), optional: z.boolean().optional(), schema: z.object({})});

export const capabilityCommand = z.object({name: z.string(), arguments: z.array(argument).optional(), sensitive: z.boolean().optional()});

export const capability = z.object({id: z.string(), version: z.number().int(), status: z.enum(["proposed", "live", "deprecated", "dead"]), name: z.string(), ephemeral: z.boolean().optional(), attributes: z.record(z.string(), capabilityAttribute).optional(), commands: z.record(z.string(), capabilityCommand).optional()});

export const validateResponse = async <Output>(
  schema: {
    readonly '~standard': {
      readonly validate: (value: unknown) => ({ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }) | Promise<{ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }>
    }
  },
  value: unknown
): Promise<Output> => {
  const result = await schema['~standard'].validate(value)

  if (result.issues !== undefined) {
    const detail = result.issues
      .map(({ message, path }) =>
        path?.length
          ? `${path.map((segment) => String(typeof segment === 'object' ? segment.key : segment)).join('.')}: ${message}`
          : message
      )
      .join('; ')

    throw new Error(`Response does not match the schema: ${detail}`, { cause: { issues: result.issues } })
  }

  return result.value
};

/**
 * Get a Capability by ID and Version
 * 
 * GET /capabilities/{capabilityId}/{capabilityVersion}
 */
export const getApiCapabilitiesCapabilityIdCapabilityVersion = async (options?: GetApiCapabilitiesCapabilityIdCapabilityVersionOptions) => {
const {baseUrl = "https://api.smartthings.com/v1", fetch: fetchFn = fetch, Bearer} = options ?? {}

const query = new URLSearchParams()
const headers = new Headers()
headers.set('accept', "application/json")

if (Bearer !== undefined) headers.set('authorization', `Bearer ${Bearer}`)

const url = `${baseUrl.replace(/\/+$/, '')}/capabilities/${encodeURIComponent(String(args.capabilityId))}/${encodeURIComponent(String(args.capabilityVersion))}${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "GET", headers})

if (!res.ok) throw new Error(`Request failed with status ${res.status}`, {cause: {status: res.status, body: await res.text()}})

return validateResponse(capability, await res.json())
};