import {z} from 'zod'

export type GetApiV1PromptsAliasVersionsVersionOptions = {baseUrl?: string | undefined, fetch?: typeof fetch | undefined};

export const promptMessage = z.object({role: z.string(), content: z.string()});

export const evaluationModelProvider = z.enum(["OPEN_AI", "ANTHROPIC"]);

export const modelSettings = z.object({provider: evaluationModelProvider.optional(), name: z.string().optional(), temperature: z.number().optional(), maxTokens: z.number().int().optional(), topP: z.number().optional(), frequencyPenalty: z.number().optional(), presencePenalty: z.number().optional(), stopSequence: z.array(z.string()).optional(), reasoningEffort: z.enum(["MINIMAL", "LOW", "MEDIUM", "HIGH"]).optional(), verbosity: z.enum(["LOW", "MEDIUM", "HIGH"]).optional()});

export const outputSchemaField = z.object({id: z.string(), name: z.string(), type: z.string(), required: z.boolean().optional(), parentId: z.string().optional()});

export const outputSchema = z.object({name: z.string(), fields: z.array(outputSchemaField)});

export const tool = z.object({id: z.string().optional(), name: z.string(), description: z.string(), mode: z.enum(["STRICT", "ADDITIONAL", "NO_ADDITIONAL"]), structuredSchema: outputSchema.optional()});

export const getPromptResponse = z.object({success: z.boolean(), data: z.object({id: z.string(), version: z.string().optional(), hash: z.string(), label: z.string().optional(), text: z.string().optional(), messages: z.array(promptMessage).optional(), type: z.enum(["TEXT", "LIST"]), interpolationType: z.enum(["MUSTACHE", "MUSTACHE_WITH_SPACE", "FSTRING", "DOLLAR_BRACKETS"]), modelSettings: modelSettings.optional(), outputType: z.enum(["TEXT", "JSON", "SCHEMA"]), outputSchema: outputSchema.optional(), tools: z.array(tool).optional()}), deprecated: z.boolean()});

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
};

/**
 * Pull Prompts By Version
 * 
 * GET /v1/prompts/{alias}/versions/{version}
 */
export const getApiV1PromptsAliasVersionsVersion = async (options?: GetApiV1PromptsAliasVersionsVersionOptions) => {
const {baseUrl = "https://api.confident-ai.com", fetch: fetchFn = fetch} = options ?? {}

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

const url = `${baseUrl.replace(/\/+$/, '')}/v1/prompts/${encodeURIComponent(String(args.alias))}/versions/${encodeURIComponent(String(args.version))}${query.size > 0 ? `?${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(getPromptResponse, await res.json())
};