import {z} from 'zod'

export type GetApiV1TextPresetsOptions = {baseUrl?: string | undefined, BearerAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const textOverlayBackgroundOutput = z.object({color: z.string(), type: z.literal("solid")});

export const textOverlayBackgroundPadding = z.number().gte(0).lte(1);

export const textOverlayBackgroundShape = z.enum(["none", "regular", "squircle"]);

export const textOverlayLetterSpacing = z.number().gte(-0.2).lte(1);

export const textOverlayOutline = z.string().nullable();

export const textOverlayTextAlign = z.enum(["left", "center", "right"]);

export const textPresetStyle = z.object({background: textOverlayBackgroundOutput, backgroundPadding: textOverlayBackgroundPadding, backgroundShape: textOverlayBackgroundShape, color: z.string(), fontFamily: z.string(), fontSizeScale: z.number().gt(0), fontWeight: z.number(), fontWidth: z.number(), letterSpacing: textOverlayLetterSpacing, outline: textOverlayOutline, textAlign: textOverlayTextAlign});

export const textPreset = z.object({name: z.string(), presetId: z.string(), scope: z.enum(["default", "personal"]), style: textPresetStyle});

export const getApiV1TextPresetsResponse = z.object({presets: z.array(textPreset)});

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
};

/**
 * List text presets
 * 
 * GET /v1/text-presets
 */
export const getApiV1TextPresets = async (options?: GetApiV1TextPresetsOptions) => {
const {baseUrl = "https://api.tella.com", fetch: fetchFn = fetch, BearerAuth} = options ?? {}

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

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

const url = `${baseUrl.replace(/\/+$/, '')}/v1/text-presets${query.size > 0 ? `?${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(getApiV1TextPresetsResponse, await res.json())
};