import {z} from 'zod'

export type GetApiV2WorkflowsOptions = {baseUrl?: string | undefined, fetch?: typeof fetch | undefined};

export const conditionOperationV2 = z.object({label: z.string(), value: z.string()});

export const engineParamBindingValueV2 = z.object({label: z.string(), literal: z.string().optional(), reference: z.string().optional()});

export const engineParamBindingV2 = z.object({array_value: z.array(engineParamBindingValueV2).optional(), value: engineParamBindingValueV2.optional()});

export const conditionSubjectV2 = z.object({label: z.string(), reference: z.string()});

export const conditionV2 = z.object({operation: conditionOperationV2, param_bindings: z.array(engineParamBindingV2), subject: conditionSubjectV2});

export const conditionGroupV2 = z.object({conditions: z.array(conditionV2)});

export const workflowDelay = z.object({conditions_apply_over_delay: z.boolean(), for_seconds: z.number().int()});

export const expressionElseBranchV2 = z.object({result: engineParamBindingV2});

export const expressionBranchV2 = z.object({condition_groups: z.array(conditionGroupV2), result: engineParamBindingV2});

export const returnsMetaV2 = z.object({array: z.boolean(), type: z.string()});

export const expressionBranchesOptsV2 = z.object({branches: z.array(expressionBranchV2), returns: returnsMetaV2});

export const expressionFilterOptsV2 = z.object({condition_groups: z.array(conditionGroupV2)});

export const expressionNavigateOptsV2 = z.object({reference: z.string(), reference_label: z.string()});

export const expressionParseOptsV2 = z.object({returns: returnsMetaV2, source: z.string()});

export const expressionOperationV2 = z.object({branches: expressionBranchesOptsV2.optional(), filter: expressionFilterOptsV2.optional(), navigate: expressionNavigateOptsV2.optional(), operation_type: z.enum(["navigate", "filter", "count", "min", "max", "sum", "random", "first", "parse", "branches"]), parse: expressionParseOptsV2.optional(), returns: returnsMetaV2});

export const expressionV2 = z.object({else_branch: expressionElseBranchV2.optional(), label: z.string(), operations: z.array(expressionOperationV2), reference: z.string(), returns: returnsMetaV2, root_reference: z.string()});

export const engineReferenceV2 = z.object({array: z.boolean(), key: z.string(), label: z.string(), type: z.string()});

export const stepConfigSlim = z.object({label: z.string(), name: z.string()});

export const triggerSlim = z.object({label: z.string(), name: z.string()});

export const workflowSlim = z.object({condition_groups: z.array(conditionGroupV2), continue_on_step_error: z.boolean(), delay: workflowDelay.optional(), expressions: z.array(expressionV2), folder: z.string().optional(), id: z.string(), include_private_incidents: z.boolean(), name: z.string(), once_for: z.array(engineReferenceV2), runs_from: z.string().optional(), runs_on_incident_modes: z.array(z.enum(["standard", "test", "retrospective"])), runs_on_incidents: z.enum(["newly_created", "newly_created_and_active"]), shortform: z.string().optional(), state: z.enum(["active", "disabled", "draft", "error"]), steps: z.array(stepConfigSlim), trigger: triggerSlim, version: z.number().int()});

export const workflowsV2ListWorkflowsResponseBody = z.object({workflows: z.array(workflowSlim)});

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
};

/**
 * ListWorkflows Workflows V2
 * 
 * GET /v2/workflows
 */
export const getApiV2Workflows = async (options?: GetApiV2WorkflowsOptions) => {
const {baseUrl = "https:////api.incident.io", fetch: fetchFn = fetch} = options ?? {}

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

const url = `${baseUrl.replace(/\/+$/, '')}/v2/workflows${query.size > 0 ? `?${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(workflowsV2ListWorkflowsResponseBody, await res.json())
};