#!/usr/bin/env node
/** Validate Healthcare module import boundaries. */
import { readFileSync, readdirSync, statSync } from "node:fs";
import { join, relative, sep } from "node:path";
import { fileURLToPath } from "node:url";

const ROOT = join(fileURLToPath(new URL(".", import.meta.url)), "..");
const EXT = new Set([".ts", ".tsx"]);
const importRegex = /from\s+["']([^"']+)["']/g;

const LEGACY = [
  "@/components/healthcare/",
  "@/lib/healthcare-api",
  "@/lib/healthcare-portals",
  "@/hooks/useHealthcareLookups",
  "@/hooks/useHealthcarePatientContext",
  "@/hooks/useHealthcareDoctorContext",
];

const FORBIDDEN = [
  "@/components/accounting/",
  "@/components/beauty/",
  "@/modules/beauty/",
  "@/modules/accounting/",
  "@/src/modules/beauty/",
];

function walk(dir, files = []) {
  for (const entry of readdirSync(dir)) {
    if (entry === "node_modules" || entry === ".next") continue;
    const full = join(dir, entry);
    if (statSync(full).isDirectory()) walk(full, files);
    else if (EXT.has(entry.slice(entry.lastIndexOf(".")))) files.push(full);
  }
  return files;
}

/** @type {Array<{file: string, importPath: string, reason: string}>} */
const violations = [];

for (const scope of ["app/healthcare", "src/modules/healthcare"]) {
  const abs = join(ROOT, scope);
  if (!statSync(abs, { throwIfNotFound: false })?.isDirectory()) continue;
  for (const file of walk(abs)) {
    const rel = relative(ROOT, file).split(sep).join("/");
    const content = readFileSync(file, "utf8");
    let m;
    importRegex.lastIndex = 0;
    while ((m = importRegex.exec(content)) !== null) {
      const p = m[1];
      for (const legacy of LEGACY) {
        if (p.startsWith(legacy) || p === legacy) {
          violations.push({ file: rel, importPath: p, reason: "legacy healthcare path" });
        }
      }
      for (const forbidden of FORBIDDEN) {
        if (p.startsWith(forbidden)) {
          violations.push({ file: rel, importPath: p, reason: "cross-module import" });
        }
      }
      if (p.includes("../") && rel.startsWith("src/modules/healthcare")) {
        violations.push({ file: rel, importPath: p, reason: "relative import chain" });
      }
    }
  }
}

for (const scope of ["src/shared", "components/ds"]) {
  const abs = join(ROOT, scope);
  if (!statSync(abs, { throwIfNotFound: false })?.isDirectory()) continue;
  for (const file of walk(abs)) {
    const rel = relative(ROOT, file).split(sep).join("/");
    const content = readFileSync(file, "utf8");
    let m;
    importRegex.lastIndex = 0;
    while ((m = importRegex.exec(content)) !== null) {
      if (m[1].startsWith("@/src/modules/healthcare/")) {
        violations.push({ file: rel, importPath: m[1], reason: "shared imports healthcare" });
      }
    }
  }
}

console.log("Healthcare Import Validation\n");
if (violations.length) {
  console.error(`❌ ${violations.length} violation(s):`);
  for (const v of violations) console.error(`   ${v.file}: ${v.importPath} (${v.reason})`);
  process.exit(1);
}
console.log("✅ Healthcare imports use @/src/modules/healthcare/*");
console.log("✅ No cross-module or relative import violations");
process.exit(0);