import {z} from 'zod'

export type ScenarioSource = 'manual' | 'drafted';

export type GetApiV1ScenariosArgs = {source?: (ScenarioSource | null) | undefined, source_agent_id?: (string | null) | undefined, source_persona_id?: (string | null) | undefined, agent_id?: (string | null) | undefined, tags?: (Array<string> | null) | undefined, created_after?: (string | null) | undefined, limit?: number | undefined, cursor?: (string | null) | undefined};

export type GetApiV1ScenariosOptions = {baseUrl: string, APIKeyHeader?: string | undefined, fetch?: typeof fetch | undefined};

export const scenarioSource = z.enum(["manual", "drafted"]);

export const scenarioAgentRef = z.object({id: z.string(), name: z.string()});

export const scenarioResponse = z.object({id: z.string(), organization_id: z.string(), name: z.string(), intent: z.string(), journey: z.string(), source: scenarioSource, source_brief: z.string().nullable().optional(), source_agent_id: z.string().nullable().optional(), source_agent_name: z.string().nullable().optional(), source_persona_id: z.string().nullable().optional(), source_persona_name: z.string().nullable().optional(), tags: z.array(z.string()), agents: z.array(scenarioAgentRef).optional(), created_by: z.string().nullable().optional(), created_at: z.string(), updated_at: z.string()});

export const cursorPageScenarioResponse = z.object({items: z.array(scenarioResponse), next_cursor: z.string().nullable().optional(), has_more: 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
};

/**
 * List scenarios
 * 
 * GET /v1/scenarios
 */
export const getApiV1Scenarios = async (args: GetApiV1ScenariosArgs, options: GetApiV1ScenariosOptions) => {
const {baseUrl, fetch: fetchFn = fetch, APIKeyHeader} = options ?? {}

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

if (args.source != null) query.append("source", String(args.source))
if (args.source_agent_id != null) query.append("source_agent_id", String(args.source_agent_id))
if (args.source_persona_id != null) query.append("source_persona_id", String(args.source_persona_id))
if (args.agent_id != null) query.append("agent_id", String(args.agent_id))
for (const item of args.tags ?? []) query.append("tags", String(item))
if (args.created_after != null) query.append("created_after", String(args.created_after))
if (args.limit != null) query.append("limit", String(args.limit))
if (args.cursor != null) query.append("cursor", String(args.cursor))
if (APIKeyHeader !== undefined) headers.set("x-api-key", APIKeyHeader)

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