import { Router } from 'express';
import { getFileTree, readProjectFile, writeProjectFile, createProjectFile, createProjectDirectory, renameProjectEntry, deleteProjectEntry } from '../storage';
import { requireAuth } from '../middleware/auth';
import { checkAccess } from '../projectAccess';

const router = Router();
router.use( requireAuth );

router.get( '/:projectId/tree', ( req, res ) =>
{
  const denied = checkAccess( req.params.projectId, req.user!, 'view' );
  if ( denied ) { res.status( denied.status ).json( { error: denied.error } ); return; }
  res.json( getFileTree( req.params.projectId ) );
} );

router.get( '/:projectId/*', ( req, res ) =>
{
  const denied = checkAccess( req.params.projectId, req.user!, 'view' );
  if ( denied ) { res.status( denied.status ).json( { error: denied.error } ); return; }
  const filePath = ( req.params as Record<string, string> )[ 0 ];
  const content = readProjectFile( req.params.projectId, filePath );
  if ( content === null ) { res.status( 404 ).json( { error: 'Not found' } ); return; }
  res.type( 'text/plain' ).send( content );
} );

router.post( '/:projectId/create-file', ( req, res ) =>
{
  const denied = checkAccess( req.params.projectId, req.user!, 'edit' );
  if ( denied ) { res.status( denied.status ).json( { error: denied.error } ); return; }
  const { path: filePath } = req.body as { path: string };
  if ( !filePath ) { res.status( 400 ).json( { error: 'path required' } ); return; }
  const ok = createProjectFile( req.params.projectId, filePath );
  if ( !ok ) { res.status( 409 ).json( { error: 'Already exists or invalid path' } ); return; }
  res.json( { ok: true } );
} );

router.post( '/:projectId/create-directory', ( req, res ) =>
{
  const denied = checkAccess( req.params.projectId, req.user!, 'edit' );
  if ( denied ) { res.status( denied.status ).json( { error: denied.error } ); return; }
  const { path: dirPath } = req.body as { path: string };
  if ( !dirPath ) { res.status( 400 ).json( { error: 'path required' } ); return; }
  const ok = createProjectDirectory( req.params.projectId, dirPath );
  if ( !ok ) { res.status( 409 ).json( { error: 'Already exists or invalid path' } ); return; }
  res.json( { ok: true } );
} );

router.post( '/:projectId/rename', ( req, res ) =>
{
  const denied = checkAccess( req.params.projectId, req.user!, 'edit' );
  if ( denied ) { res.status( denied.status ).json( { error: denied.error } ); return; }
  const { path: oldPath, newName } = req.body as { path: string; newName: string };
  if ( !oldPath || !newName ) { res.status( 400 ).json( { error: 'path and newName required' } ); return; }
  const ok = renameProjectEntry( req.params.projectId, oldPath, newName );
  if ( !ok ) { res.status( 409 ).json( { error: 'Rename failed' } ); return; }
  res.json( { ok: true } );
} );

router.post( '/:projectId/delete', ( req, res ) =>
{
  const denied = checkAccess( req.params.projectId, req.user!, 'edit' );
  if ( denied ) { res.status( denied.status ).json( { error: denied.error } ); return; }
  const { path: targetPath } = req.body as { path: string };
  if ( !targetPath ) { res.status( 400 ).json( { error: 'path required' } ); return; }
  const ok = deleteProjectEntry( req.params.projectId, targetPath );
  if ( !ok ) { res.status( 409 ).json( { error: 'Delete failed' } ); return; }
  res.json( { ok: true } );
} );

router.put( '/:projectId/*', ( req, res ) =>
{
  const denied = checkAccess( req.params.projectId, req.user!, 'edit' );
  if ( denied ) { res.status( denied.status ).json( { error: denied.error } ); return; }
  const filePath = ( req.params as Record<string, string> )[ 0 ];
  if ( typeof req.body !== 'string' ) { res.status( 400 ).json( { error: 'Content must be text' } ); return; }
  const ok = writeProjectFile( req.params.projectId, filePath, req.body );
  if ( !ok ) { res.status( 403 ).json( { error: 'Invalid path' } ); return; }
  res.json( { ok: true } );
} );

export default router;