import { apiRequest, createUuid } from "./_shared";
import type { ScriptType } from "./scripts";
import type {
  CronPreview,
  PythonVersion,
  Schedule,
  ScheduleNodeRunArtifacts,
  ScheduleRunDetail,
  ScheduleRunStatus,
  ScheduleRunSummary,
} from "./schedules";

export type ScheduleNode = {
  node_id: string;
  schedule_id: string;
  node_key: string;
  node_name: string;
  versions_id: string;
  timeout_seconds: number;
  retry_count: number;
  retry_interval_sec: number;
  position_x: number;
  position_y: number;
  arguments_json: Record<string, unknown>;
  env_refs_json: Record<string, string>;
  python_version: PythonVersion;
  created_at: string;
  updated_at: string;
  version: {
    versions_id: string;
    version_label: string;
    script_id: string;
    script_name: string;
    script_type: ScriptType;
    content_hash: string;
    created_at: string;
  };
};

export type ScheduleEdge = {
  edge_id: string;
  schedule_id: string;
  source_node_id: string;
  target_node_id: string;
  condition_expr: string | null;
  created_at: string;
};

export type DagValidation = {
  valid: boolean;
  node_count: number;
  edge_count: number;
  root_node_ids: string[];
  leaf_node_ids: string[];
  topological_order: string[];
  errors: Array<{
    code: string;
    message: string;
    edge_id?: string;
    node_ids?: string[];
  }>;
};

export type ScheduleNodeRunStatus =
  | ScheduleRunStatus
  | "skipped";

export type ScheduleNodeRun = {
  node_run_id: string;
  run_id: string;
  node_id: string;
  versions_id: string;
  attempt_no: number;
  node_status: ScheduleNodeRunStatus;
  state_version: number;
  started_at: string | null;
  finished_at: string | null;
  duration_ms: number | null;
  exit_code: number | null;
  message: string | null;
  logs_object_id: string | null;
  result_object_id: string | null;
};

export async function createScheduleNode(
  workspaceId: string,
  scheduleId: string,
  input: {
    workflow_version: number;
    node_key: string;
    node_name: string;
    versions_id: string;
    timeout_seconds?: number;
    retry_count?: number;
    retry_interval_sec?: number;
    position_x?: number;
    position_y?: number;
    arguments_json?: Record<string, unknown>;
    env_refs_json?: Record<string, string>;
    python_version?: PythonVersion;
  },
): Promise<Schedule> {
  return apiRequest<Schedule>(
    `/api/v1/schedules/${scheduleId}/nodes`,
    { method: "POST", body: JSON.stringify(input) },
    workspaceId,
  );
}

export async function updateScheduleNode(
  workspaceId: string,
  scheduleId: string,
  nodeId: string,
  input: {
    workflow_version: number;
    node_name?: string;
    versions_id?: string;
    timeout_seconds?: number;
    retry_count?: number;
    retry_interval_sec?: number;
    position_x?: number;
    position_y?: number;
    arguments_json?: Record<string, unknown>;
    env_refs_json?: Record<string, string>;
    python_version?: PythonVersion;
  },
): Promise<Schedule> {
  return apiRequest<Schedule>(
    `/api/v1/schedules/${scheduleId}/nodes/${nodeId}`,
    { method: "PUT", body: JSON.stringify(input) },
    workspaceId,
  );
}

export async function deleteScheduleNode(
  workspaceId: string,
  scheduleId: string,
  nodeId: string,
  workflowVersion: number,
  options: { delete_execution_history?: boolean } = {},
): Promise<Schedule> {
  return apiRequest<Schedule>(
    `/api/v1/schedules/${scheduleId}/nodes/${nodeId}`,
    {
      method: "DELETE",
      body: JSON.stringify({ workflow_version: workflowVersion, ...options }),
    },
    workspaceId,
  );
}

export async function createScheduleEdge(
  workspaceId: string,
  scheduleId: string,
  input: {
    workflow_version: number;
    source_node_id: string;
    target_node_id: string;
    condition_expr?: string | null;
  },
): Promise<Schedule> {
  return apiRequest<Schedule>(
    `/api/v1/schedules/${scheduleId}/edges`,
    { method: "POST", body: JSON.stringify(input) },
    workspaceId,
  );
}

export async function deleteScheduleEdge(
  workspaceId: string,
  scheduleId: string,
  edgeId: string,
  workflowVersion: number,
): Promise<Schedule> {
  return apiRequest<Schedule>(
    `/api/v1/schedules/${scheduleId}/edges/${edgeId}`,
    { method: "DELETE", body: JSON.stringify({ workflow_version: workflowVersion }) },
    workspaceId,
  );
}

export async function validateSchedule(
  workspaceId: string,
  scheduleId: string,
): Promise<DagValidation & {
  schedule_id: string;
  workflow_version: number;
}> {
  return apiRequest(
    `/api/v1/schedules/${scheduleId}/validate`,
    { method: "POST" },
    workspaceId,
  );
}

export async function previewCron(
  workspaceId: string,
  input: {
    cron_expression: string;
    timezone: string;
    count?: number;
    base_time?: string;
  },
): Promise<CronPreview> {
  return apiRequest<CronPreview>(
    "/api/v1/cron/preview",
    { method: "POST", body: JSON.stringify(input) },
    workspaceId,
  );
}

export async function runScheduleNow(
  workspaceId: string,
  scheduleId: string,
): Promise<ScheduleRunDetail> {
  return apiRequest<ScheduleRunDetail>(
    `/api/v1/schedules/${scheduleId}/run`,
    {
      method: "POST",
      headers: {
        "Idempotency-Key": createUuid(),
      },
      body: JSON.stringify({ reason: "manual_run" }),
    },
    workspaceId,
  );
}

export async function listScheduleRuns(
  workspaceId: string,
  input: {
    scheduleId?: string;
    status?: ScheduleRunStatus;
    limit?: number;
  } = {},
): Promise<ScheduleRunSummary[]> {
  const query = new URLSearchParams();
  if (input.scheduleId) query.set("schedule_id", input.scheduleId);
  if (input.status) query.set("status", input.status);
  query.set("limit", String(input.limit ?? 20));
  return apiRequest<ScheduleRunSummary[]>(
    `/api/v1/schedule-runs?${query.toString()}`,
    {},
    workspaceId,
  );
}

export async function getScheduleRun(
  workspaceId: string,
  runId: string,
): Promise<ScheduleRunDetail> {
  return apiRequest<ScheduleRunDetail>(
    `/api/v1/schedule-runs/${runId}`,
    {},
    workspaceId,
  );
}

export async function getScheduleNodeRunArtifacts(
  workspaceId: string,
  runId: string,
  nodeRunId: string,
): Promise<ScheduleNodeRunArtifacts> {
  return apiRequest<ScheduleNodeRunArtifacts>(
    `/api/v1/schedule-runs/${runId}/node-runs/${nodeRunId}/artifacts`,
    {},
    workspaceId,
  );
}

// ----------------------------------------------------------------------------