import {z} from 'zod'

export type GetApiProjectsArgs = {search?: string | undefined, sort?: ('default' | '+default' | '-default' | 'project_name' | '+project_name' | '-project_name' | 'obs_count' | '+obs_count' | '-obs_count') | undefined, limit?: number | undefined, offset?: number | undefined, create_parquet?: boolean | undefined};

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

export const project = z.object({pj_code: z.string().optional(), project_name: z.string().optional(), project_description: z.string().optional(), start_date: z.string().optional(), stop_date: z.string().optional(), obs_count: z.number().int().optional(), last_plot_added_date: z.string().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 all projects
 * 
 * GET /projects
 */
export const getApiProjects = async (args: GetApiProjectsArgs, options?: GetApiProjectsOptions) => {
const {baseUrl = "https://api.vegbank.org", fetch: fetchFn = fetch} = options ?? {}

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

if (args.search != null) query.append("search", String(args.search))
if (args.sort != null) query.append("sort", String(args.sort))
if (args.limit != null) query.append("limit", String(args.limit))
if (args.offset != null) query.append("offset", String(args.offset))
if (args.create_parquet != null) query.append("create_parquet", String(args.create_parquet))

const url = `${baseUrl.replace(/\/+$/, '')}/projects${query.size > 0 ? `?${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(project, await res.json())
};