// packages/core-eslint/rules/no-realtime-handler-reexport.js
// Realtime handlers are private. A feature's realtime/handlers/*.handler.ts
// must only be wired in the feature's own bind-production / bind-dev-seed files.
// They must never be re-exported from barrel files or other public surfaces.

const BIND_FILE = /\bdi\/bind-(?:production|dev-seed)\b/;
const REALTIME_HANDLERS_IN_SOURCE = /\/realtime\/handlers\//;
const HANDLERS_IN_SOURCE = /\/handlers\//;
const REALTIME_IN_FILENAME = /\/realtime\//;

export default {
  meta: {
    type: "problem",
    docs: {
      description:
        "Block re-exports of realtime/handlers/** outside feature bind-* files (ADR-016 R1)",
    },
    messages: {
      noRealtimeHandlerReexport:
        "Realtime handlers (realtime/handlers/*.handler.ts) must not be re-exported (ADR-016 R1). " +
        "Wire them only inside the feature's own bind-production / bind-dev-seed files.",
    },
    schema: [],
  },
  create(context) {
    const filename = context.filename ?? context.getFilename();

    // Bind-* files are the only allowed place for these exports/imports
    if (BIND_FILE.test(filename)) return {};

    function checkExportSource(node) {
      if (!node.source) return;
      const source = node.source.value;
      const isRealtimeHandler =
        REALTIME_HANDLERS_IN_SOURCE.test(source) ||
        (HANDLERS_IN_SOURCE.test(source) &&
          REALTIME_IN_FILENAME.test(filename));
      if (isRealtimeHandler) {
        context.report({ node, messageId: "noRealtimeHandlerReexport" });
      }
    }

    return {
      ExportNamedDeclaration: checkExportSource,
      ExportAllDeclaration: checkExportSource,
    };
  },
};