// ESLint flat config — enforces the DependencyMap §2 edge set for
// `evidence-binder`: it may depend on `citation-engine` and `evidence-anchor`,
// and must NOT depend on `evidence-source`, `citation-work`, or the umbrella
// `citation-evidence`.

import js from "@eslint/js";
import tseslint from "typescript-eslint";
import importPlugin from "eslint-plugin-import";
import globals from "globals";

// Package specifiers and relative-path prefixes that would cross a forbidden
// dependency edge. Anchor and engine are the only allowed sibling edges.
const FORBIDDEN_EDGES = [
  { name: "@citation-evidence/evidence-source", message: "binder must not depend on evidence-source (DependencyMap §2)." },
  { name: "@citation-evidence/work", message: "binder must not depend on citation-work (DependencyMap §2)." },
  { name: "@citation-evidence/citation-work", message: "binder must not depend on citation-work (DependencyMap §2)." },
];

const FORBIDDEN_PATTERNS = [
  { group: ["../evidence-source/*", "../citation-work/*", "../citation-evidence/*"], message: "binder must not reach into evidence-source, citation-work, or the umbrella (DependencyMap §2)." },
];

export default tseslint.config(
  {
    ignores: ["dist/", "node_modules/", "coverage/", "**/*.d.ts"],
  },
  js.configs.recommended,
  ...tseslint.configs.recommended,
  {
    files: ["src/**/*.{ts,tsx}"],
    languageOptions: {
      ecmaVersion: 2022,
      sourceType: "module",
      globals: { ...globals.node, ...globals.browser },
    },
    plugins: {
      import: importPlugin,
    },
    settings: {
      "import/resolver": {
        typescript: { project: "./tsconfig.json" },
      },
    },
    rules: {
      "no-restricted-imports": [
        "error",
        {
          paths: FORBIDDEN_EDGES,
          patterns: FORBIDDEN_PATTERNS,
        },
      ],
    },
  },
);