/**
 * Well-known scope action defaults.
 *
 * SDK provides default metadata for standard action slugs.
 * Plugins override or extend by declaring their own metadata in the schema.
 */

export interface ActionDefaults {
  name: string;
  type: string;
  retryable: boolean;
  lifecycle: boolean;
  /** The parameters the platform sends the action, as every scope type declares them (the scope, the deployment, the traffic). */
  parameters?: { schema: Record<string, unknown> };
}

const str = { type: "string" } as const;
/** `parameters.schema` naming the platform-owned keys an action receives; every scope template declares the same. */
const params = (...keys: Array<"scope_id" | "deployment_id" | "desired_traffic" | "instance_id" | "desired_instances">) => ({
  schema: {
    type: "object",
    required: [...keys],
    properties: Object.fromEntries(
      keys.map((k) => [k, k === "desired_traffic" || k === "desired_instances" ? { type: "number" } : str])
    ),
  },
});
const SCOPE = params("scope_id");
const DEPLOYMENT = params("scope_id", "deployment_id");

export const WELL_KNOWN_ACTIONS: Record<string, ActionDefaults> = {
  "create-scope": {
    name: "Create Scope",
    type: "create",
    retryable: true,
    lifecycle: true,
    parameters: SCOPE,
  },
  "delete-scope": {
    name: "Delete Scope",
    type: "custom",
    retryable: true,
    lifecycle: true,
    parameters: SCOPE,
  },
  "update-scope": {
    name: "Update Scope",
    type: "custom",
    retryable: true,
    lifecycle: true,
    parameters: SCOPE,
  },
  "start-initial": {
    name: "Start Initial Deployment",
    type: "custom",
    retryable: true,
    lifecycle: true,
    parameters: DEPLOYMENT,
  },
  "start-blue-green": {
    name: "Start Blue-Green Deployment",
    type: "custom",
    retryable: true,
    lifecycle: true,
    parameters: DEPLOYMENT,
  },
  "switch-traffic": {
    name: "Switch Traffic",
    type: "custom",
    retryable: false,
    lifecycle: true,
    parameters: params("scope_id", "deployment_id", "desired_traffic"),
  },
  "finalize-deployment": {
    name: "Finalize Deployment",
    type: "custom",
    retryable: false,
    lifecycle: true,
    parameters: DEPLOYMENT,
  },
  "finalize-blue-green": {
    name: "Finalize Blue-Green",
    type: "custom",
    retryable: false,
    lifecycle: true,
    parameters: DEPLOYMENT,
  },
  "rollback-deployment": {
    name: "Rollback Deployment",
    type: "custom",
    retryable: true,
    lifecycle: true,
    parameters: DEPLOYMENT,
  },
  "delete-deployment": {
    name: "Delete Deployment",
    type: "custom",
    retryable: true,
    lifecycle: true,
    parameters: DEPLOYMENT,
  },
  "diagnose-scope": {
    name: "Diagnose Scope",
    type: "diagnose",
    retryable: false,
    lifecycle: true,
    parameters: SCOPE,
  },
  "diagnose-deployment": {
    name: "Diagnose Deployment",
    type: "diagnose",
    retryable: false,
    lifecycle: true,
    parameters: DEPLOYMENT,
  },
  "kill-instances": {
    name: "Kill Instances",
    type: "custom",
    retryable: false,
    lifecycle: true,
    parameters: params("scope_id", "instance_id", "deployment_id"),
  },
  "set-desired-instance-count": {
    name: "Set Instance Count",
    type: "custom",
    retryable: false,
    lifecycle: true,
    parameters: params("desired_instances"),
  },
  "pause-autoscaling": {
    name: "Pause Autoscaling",
    type: "custom",
    retryable: false,
    lifecycle: true,
  },
  "resume-autoscaling": {
    name: "Resume Autoscaling",
    type: "custom",
    retryable: false,
    lifecycle: true,
  },
  "restart-pods": {
    name: "Restart Pods",
    type: "custom",
    retryable: false,
    lifecycle: true,
  },
};

/** Actions that skip lifecycle management (no PATCH status). */
const EPHEMERAL_PREFIXES = ["log:", "metric:", "parameter:", "instance:"];

export function getActionDefaults(slug: string): ActionDefaults {
  if (WELL_KNOWN_ACTIONS[slug]) {
    return WELL_KNOWN_ACTIONS[slug];
  }

  const isEphemeral = EPHEMERAL_PREFIXES.some((p) => slug.startsWith(p));
  return {
    name: slug,
    type: "custom",
    retryable: false,
    lifecycle: !isEphemeral,
  };
}