import { Option, Schema } from "effect"; import type { Authentication, AuthenticationTemplateValue, AuthenticationVariable } from "./types";import { TOKEN_VARIABLE } from "./types"; // ---------------------------------------------------------------------------// OpenAPI integration config — the opaque blob stored on the catalog// `integration.config` column (D1). Core never parses it; the plugin writes it// at register time and reads it back in `resolveTools` / `invokeTool`.//// In v2 there are NO credential bindings, NO per-source secret slots, and NO// StoredSource credential config. The config carries only://   - the OpenAPI spec text (inlined) OR the source URL to (re)fetch from,//   - the optional base URL override,//   - the auth templates a connection's value is rendered through.// --------------------------------------------------------------------------- const AuthenticationVariableSchema = Schema.Struct({  type: Schema.Literal("variable"),  name: Schema.String,}); const AuthenticationTemplateValueSchema = Schema.Union([  Schema.String,  Schema.Array(Schema.Union([Schema.String, AuthenticationVariableSchema])),]); const APIKeyAuthenticationSchema = Schema.Struct({  slug: Schema.String,  type: Schema.Literal("apiKey"),  headers: Schema.optional(Schema.Record(Schema.String, AuthenticationTemplateValueSchema)),  queryParams: Schema.optional(Schema.Record(Schema.String, AuthenticationTemplateValueSchema)),}); const OAuthAuthenticationSchema = Schema.Struct({  slug: Schema.String,  type: Schema.Literal("oauth"),  authorizationUrl: Schema.String,  tokenUrl: Schema.String,  scopes: Schema.Array(Schema.String),}); export const AuthenticationSchema = Schema.Union([  OAuthAuthenticationSchema,  APIKeyAuthenticationSchema,]); export const OpenApiIntegrationConfigSchema = Schema.Struct({  /** Inlined OpenAPI document text (resolved + parsed source of truth). */  spec: Schema.String,  /** Origin URL the spec was fetched from, when known. Enables refresh. */  sourceUrl: Schema.optional(Schema.String),  /** Google Discovery bundle URLs, when the spec came from a Google bundle. */  googleDiscoveryUrls: Schema.optional(Schema.Array(Schema.String)),  /** Base URL override; falls back to the spec's first server. */  baseUrl: Schema.optional(Schema.String),  /** Static headers applied to every request (no secret material). */  headers: Schema.optional(Schema.Record(Schema.String, Schema.String)),  /** Static query params applied to every request (no secret material). */  queryParams: Schema.optional(Schema.Record(Schema.String, Schema.String)),  /** The auth methods a connection's value can be applied through. */  authenticationTemplate: Schema.optional(Schema.Array(AuthenticationSchema)),}); export type OpenApiIntegrationConfig = Omit<  typeof OpenApiIntegrationConfigSchema.Type,  "authenticationTemplate"> & {  /** Branded over the schema's structural form so the template renderer can   *  treat `slug` as an `AuthTemplateSlug`. */  readonly authenticationTemplate?: readonly Authentication[];}; const decodeConfig = Schema.decodeUnknownOption(OpenApiIntegrationConfigSchema); /** Decode the opaque integration config blob into the openapi shape. *  Returns null when the blob is missing/incompatible. */export const decodeOpenApiIntegrationConfig = (value: unknown): OpenApiIntegrationConfig | null =>  Option.getOrNull(decodeConfig(value)) as OpenApiIntegrationConfig | null; // ---------------------------------------------------------------------------// Template rendering — "auth state derived into the auth-template format"// (D11). The resolved credential value renders into the template's// `variable("token")` slots, identically for apiKey and oauth (the oauth value// IS the access token). Returns the headers + query params to apply.// --------------------------------------------------------------------------- const isVariable = (part: string | AuthenticationVariable): part is AuthenticationVariable =>  typeof part !== "string"; const renderTemplateValue = (  template: AuthenticationTemplateValue,  values: Record<string, string | null>,): string => {  if (typeof template === "string") return template;  return template.map((part) => (isVariable(part) ? (values[part.name] ?? "") : part)).join("");}; export interface RenderedAuth {  readonly headers: Record<string, string>;  readonly queryParams: Record<string, string>;} /** Render an auth template against a connection's resolved input `values` *  (`variable → value`). For an apiKey template, each `variable("<name>")` is *  substituted from its own entry, so a method with two distinct inputs (e.g. *  Datadog) fills each header from a different value. For an oauth template (no *  explicit placement), render a bearer Authorization header from `token`. */export const renderAuthTemplate = (  template: Authentication,  values: Record<string, string | null>,): RenderedAuth => {  if (template.type === "oauth") {    return {      headers: { authorization: `Bearer ${values[TOKEN_VARIABLE] ?? ""}` },      queryParams: {},    };  }  const headers: Record<string, string> = {};  const queryParams: Record<string, string> = {};  for (const [name, tmpl] of Object.entries(template.headers ?? {})) {    headers[name] = renderTemplateValue(tmpl, values);  }  for (const [name, tmpl] of Object.entries(template.queryParams ?? {})) {    queryParams[name] = renderTemplateValue(tmpl, values);  }  return { headers, queryParams };}; /** The distinct input variables a template references — the inputs a connection *  must supply. An oauth template needs `token`; an apiKey template needs every *  `variable("<name>")` across its placements. */export const requiredTemplateVariables = (template: Authentication): readonly string[] => {  if (template.type === "oauth") return [TOKEN_VARIABLE];  const names = new Set<string>();  const collect = (tmpl: AuthenticationTemplateValue): void => {    if (typeof tmpl === "string") return;    for (const part of tmpl) {      if (isVariable(part)) names.add(part.name);    }  };  for (const tmpl of Object.values(template.headers ?? {})) collect(tmpl);  for (const tmpl of Object.values(template.queryParams ?? {})) collect(tmpl);  return [...names];};