import {z} from 'zod'

export type MigrateTasksRequest = {from_version_id?: (string | null) | undefined, task_ids?: (Array<string> | null) | undefined, to_latest?: boolean | undefined, to_version_id?: (string | null) | undefined};

export type CreateApiTasksMigrateArgs = {body: MigrateTasksRequest};

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

export const agentInputType = z.enum(["text", "json"]);

export const agentStatus = z.enum(["ACTIVE", "DELETED"]);

export const agent = z.object({agent_input_type: agentInputType.nullable().optional(), created_at: z.string(), description: z.string(), id: z.string(), name: z.string(), namespace_id: z.string(), registered_at: z.string().nullable().optional(), registration_metadata: z.record(z.string(), z.unknown()).nullable().optional(), status: agentStatus.optional(), status_reason: z.string().nullable().optional(), updated_at: z.string()});

export const taskStatus = z.enum(["IDLE", "CANCELED", "COMPLETED", "FAILED", "RUNNING", "TERMINATED", "TIMED_OUT", "DELETED"]);

export const taskResponse = z.object({agents: z.array(agent).nullable().optional(), created_at: z.string().nullable().optional(), created_version_id: z.string().nullable().optional(), current_version_id: z.string().nullable().optional(), filesystem_id: z.string(), id: z.string(), name: z.string().nullable().optional(), namespace_id: z.string(), params: z.record(z.string(), z.unknown()).nullable().optional(), status: taskStatus.nullable().optional(), status_reason: z.string().nullable().optional(), task_metadata: z.record(z.string(), z.unknown()).nullable().optional(), updated_at: z.string().nullable().optional()});

export const aCPType = z.enum(["sync", "async"]);

export const sDKType = z.enum(["claude_agent_sdk", "codex_agent_sdk"]);

export const versionStatus = z.enum(["DEPLOYING", "ACTIVE", "FAILED", "UNHEALTHY", "DRAINING", "RETIRED", "ROLLED_BACK"]);

export const versionResponse = z.object({acp_type: aCPType, author_email: z.string(), author_name: z.string(), branch_id: z.string(), created_at: z.string().nullable().optional(), deployed_at: z.string(), failure_diagnostics: z.record(z.string(), z.string()).nullable().optional(), failure_reason: z.string().nullable().optional(), git_branch: z.string(), git_hash: z.string(), git_message: z.string().optional(), id: z.string(), image_expires_at: z.string().nullable().optional(), image_url: z.string(), is_dirty: z.boolean().optional(), last_rollback_at: z.string().nullable().optional(), replicas: z.number().int().optional(), retired_at: z.string().nullable().optional(), rollback_count: z.number().int().optional(), rolled_back_at: z.string().nullable().optional(), sdk_type: sDKType, source_filesystem_id: z.string().nullable().optional(), status: versionStatus, updated_at: z.string().nullable().optional()});

export const migrateTasksResponse = z.object({branch_id: z.string(), from_version_id: z.string().nullable().optional(), tasks: z.array(taskResponse), to_version: versionResponse});

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
};

/**
 * Migrate Tasks Between Versions
 * 
 * POST /tasks/migrate
 */
export const createApiTasksMigrate = async (args: CreateApiTasksMigrateArgs, options: CreateApiTasksMigrateOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

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

const url = `${baseUrl.replace(/\/+$/, '')}/tasks/migrate${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "POST", headers, body: JSON.stringify(args.body)})

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

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