feat: implement files api

@@ -125,6 +125,7 @@ STATIC_URL = '/static/'
 
 
 # Custom Settings
+S3_BUCKET = 'khubox-files'
 CDN_PATH = 'https://khubox-files.khunet.net'
 CLOUDFRONT_KEY_ID = 'APKAJ3FOBWI34OZJTXJQ'
 CLOUDFRONT_KEY_PRIVATE = '-----BEGIN RSA PRIVATE KEY-----\nMIIEowIBAAKCAQEA18VtzURs+fQev5L00LRwRbJaObQI4kfJCIsOE7eWSOqq4Akh\nA7fI6vs3z8orXBvgc+k6GgAHrIdNwckxoQuTsCxrTDm1104qy1T4JkVxkIBYHJgH\nGzKUloK5IqdmcYbOK7IQeHJ2gR9Mv/3oKUytJSsrbM9k4oLrsxGpyEuJeHIg28aP\nwhoVWmBGcPu48l4aYAZEVY7LZRJSOQ9y7Lf8FS1u7Xtw1P91gEaqrqVXqRWY02C8\nsixpJJuiAPnM3rpcpVNlAaPdDkWmaWYJoJDOlce7Dmx1a9Ckr24krM//vpEljurC\nGml0AsHpL8LE9msM5VA+miCxCz/K+wDgm2xvvQIDAQABAoIBAFmP3pLceyuJVBYK\n5smWjB+x91eKTkG2sFB2f8JZau0bUxApWeXULHa1DiaW8UaLX7BdN7vBFW5cvz7X\nx1zklEoFNghuz/btwD+kJlikbI4hZ/F+fTyh0yFiY3xp5dDrtrpWcBW+1UeleVMc\nDnjOFfSepajFsUeANlue0k2MZSRz34s2T2scV5ZkooqdXddYUF/wDhefYm6uvCgI\nPyvY/mbJTyhte/xagY/m6yzk5gxgad0qP2ZZrHhLLMlJ/GEZToWDxD2xUei61NQT\nFFc5ZutkAE6fVb3I4SJUBSX5fl0tTMz4Aak1GP2phMhjZyjYnQMq8kvL4BNFb7gp\nary8W/UCgYEA+eKkfjjlPsEx6yHMhD7pAwy/MpUqJmF5LMxIG+qfd+GZMQ2oucn5\npUAwBHP7BD6E9H7/7jdjnCiO+iPrzM9vNLfqsdCtPWzoFYJp/6Fv002uX8seNYvJ\nQyQqrM85LYIghhnkcmJMA8GR/Iu5ZEeE2BkAl9T2EKclzmB62d/ki6MCgYEA3Q0V\nz08IEwSJW+jEsOM+XGg2YkNqCVKGQD9n4CPx0TFVJxfqFl2nVwlN2hfrlJLUQ9+l\nfXnS5AW3tE88t9we+ea0saJZEqqlm/rGsfTV/twS9cWSgvG5fTzhUbu9/ElMU29L\nmydQfWTvCup7zCuQtgwM5ZRtPwuKsI8urUg6zR8CgYAt0coZvvMCI8i0dbkbkrGF\nNqQkcUeOTBc9CKQ8QjRFdh9x6DBFCOz2ySNE3cNsTs5wSo1BL/Ta4HD/GvEU2ABr\nKUImor3xYnPX5dbr4b0wgLD1rbf3V49q+Um98C1q086E6GCEPNP1aFwNc81lvtt0\nCHmcXZdVDGEZS4WbR7uPgwKBgBO/moY12lPQoPDsH75p3uVkjg9DVJLWo5XT1FTr\nASyeSqw+b7Rl05BsDV+BqZNRdtNFhMRsANJMTHg4aAVJDh9nZBdGmMyZIEiKI/w8\nEm49fRgl+YvnSpoMuViS/EswxTfjBo8q+P7q6IxCHKNF9Ry+gNx14TizsEVL1XC3\ntkEjAoGBAMyp7wdPobJMXcclRVq6rqHs9OMcnZAveVKyxNgDbZu4OB5X4xTxGEYT\nNZQ0MFf/HcwlnH7797gVQeqF9dlqUJYe+Fc8lc/Rcwta/4R5uMgri9t8RKN91YKF\nUUFBsDEkWlkoAmfPkcrrq9cLJlmSNt3ehQj4p5iAJwoVBXXa++PO\n-----END RSA PRIVATE KEY-----'

+import boto3
 import datetime
 from botocore.signers import CloudFrontSigner
 from cryptography.hazmat.backends import default_backend
@@ -15,8 +16,39 @@ def rsa_signer(message):
     return private_key.sign(message, padding.PKCS1v15(), hashes.SHA1())
 
 
-def sign(url):
-    expire_date = datetime.datetime(2020, 6, 10)
+def sign_download(url):
+    expire_date = datetime.datetime.utcnow() + datetime.timedelta(hours=1)
     cloudfront_signer = CloudFrontSigner(settings.CLOUDFRONT_KEY_ID, rsa_signer)
     signed_url = cloudfront_signer.generate_presigned_url(url, date_less_than=expire_date)
     return signed_url
+
+
+def sign_upload(file_id):
+    s3 = boto3.client('s3')
+    signed_url = s3.generate_presigned_url(
+        'put_object',
+        Params={'Bucket': settings.S3_BUCKET, 'Key': file_id},
+        ExpiresIn=3600,
+        HttpMethod='PUT'
+    )
+    return signed_url
+
+
+def s3_delete(del_list):
+    s3 = boto3.resource('s3')
+    bucket = s3.Bucket(settings.S3_BUCKET)
+    del_s3_list = []
+    for key in del_list:
+        del_s3_list.append({'Key': key})
+    bucket.delete_objects(Delete={'Objects': del_s3_list})
+
+
+def s3_copy(file_id, new_file_id):
+    s3 = boto3.resource('s3')
+    bucket = s3.Bucket(settings.S3_BUCKET)
+    copy_source = {
+        'Bucket': settings.S3_BUCKET,
+        'Key': file_id
+    }
+    obj = bucket.Object(str(new_file_id))
+    obj.copy(copy_source)

@@ -5,7 +5,7 @@ from . import files, groups, users
 urlpatterns = [
     url(r'^files$', files.index),  # 폴더 생성, 파일 업로드, 폴더/파일 목록
     url(r'^files/trash$', files.trash),  # 휴지통 비우기
-    url(r'^files/(?P<file_id>[-\w]+)$', files.item),  # 폴더/파일 조회, 파일 다운로드, 폴더/파일 수정
+    url(r'^files/(?P<file_id>[-\w]+)$', files.item),  # 폴더/파일 조회, 폴더/파일 수정
     url(r'^files/(?P<file_id>[-\w]+)/copy$', files.copy),  # 파일 복제
     url(r'^groups$', groups.index),  # 그룹 생성
     url(r'^groups/invite/(?P<invite_code>[-\w]+)$', groups.invite),  # 그룹 초대장 조회, 그룹 초대장 사용

@@ -20,7 +20,7 @@ def trash(request):
 
 
 def item(request, file_id):
-    # 폴더/파일 조회, 파일 다운로드
+    # 폴더/파일 조회
     if request.method == 'GET':
         return JsonResponse(files.find_item(request, file_id))
     # 폴더/파일 수정

@@ -26,7 +26,7 @@ class Migration(migrations.Migration):
                 ('size', models.BigIntegerField()),
                 ('is_public', models.IntegerField(default=0)),
                 ('is_starred', models.IntegerField(default=0)),
-                ('is_trahsed', models.IntegerField(default=0)),
+                ('is_trashed', models.IntegerField(default=0)),
                 ('created_at', models.DateTimeField()),
                 ('deleted_at', models.DateTimeField(blank=True, null=True)),
             ],

@@ -12,7 +12,7 @@ class File(models.Model):
     size = models.BigIntegerField()
     is_public = models.IntegerField(default=0)
     is_starred = models.IntegerField(default=0)
-    is_trahsed = models.IntegerField(default=0)
+    is_trashed = models.IntegerField(default=0)
     created_at = models.DateTimeField()
     deleted_at = models.DateTimeField(blank=True, null=True)
 

 import json
 import uuid
+from django.conf import settings
 from django.utils import timezone
-from ..aws import sign
+from ..aws import sign_upload, sign_download, s3_copy, s3_delete
 from ..models import File, GroupUser
 
 
-# TODO: 폴더/파일 목록
+# 폴더/파일 목록
 def list_item(request):
-    return {'result': True}
+    # TODO: Auth
+    request.user_id = 1
+
+    # Validate
+    if request.GET.get('is_public') != 'true' \
+            and request.GET.get('is_starred') != 'true' \
+            and request.GET.get('is_trashed') != 'true':
+        return {'result': False, 'error': '입력이 누락되었습니다.'}
+
+    # Query Files
+    files = None
+    if request.GET.get('is_public') == 'true':
+        files = File.objects.filter(owner_user_id=request.user_id, is_public=1, deleted_at__isnull=True)
+    elif request.GET.get('is_starred') == 'true':
+        files = File.objects.filter(owner_user_id=request.user_id, is_starred=1, deleted_at__isnull=True)
+    elif request.GET.get('is_trashed') == 'true':
+        files = File.objects.filter(owner_user_id=request.user_id, is_trashed=1, deleted_at__isnull=True)
+
+    # Structure
+    data = []
+    for file in files:
+        data.append({
+            'id': file.id,
+            'type': file.type,
+            'name': file.name,
+            'size': file.size,
+            'is_public': file.is_public,
+            'is_starred': file.is_starred,
+            'is_trashed': file.is_trashed,
+            'created_at': file.created_at,
+        })
+
+    return {'result': True, 'data': data}
 
 
 # 폴더 생성, 파일 업로드
@@ -16,7 +49,10 @@ def create(request):
     request.user_id = 1
 
     # Load
-    received = json.loads(request.body.decode('utf-8'))
+    try:
+        received = json.loads(request.body.decode('utf-8'))
+    except json.decoder.JSONDecodeError:
+        return {'result': False, 'error': '입력이 잘못되었습니다.'}
 
     # Validate
     if 'parent_id' not in received \
@@ -28,7 +64,7 @@ def create(request):
         return {'result': False, 'error': '입력이 잘못되었습니다.'}
 
     # Get Parent
-    parent = File.objects.filter(id=received['parent_id'], is_trahsed=0, deleted_at__isnull=True)
+    parent = File.objects.filter(id=received['parent_id'], is_trashed=0, deleted_at__isnull=True)
 
     # Check Exists
     if len(parent) == 0:
@@ -63,18 +99,17 @@ def create(request):
         return {'result': True, 'file_id': file_id}
 
     # Return File
-    upload_url = 'https://khubox-files.khunet.net/%s' % file_id
-    upload_url = sign(upload_url)
+    upload_url = sign_upload(str(file_id))
     return {'result': True, 'file_id': file_id, 'upload_url': upload_url}
 
 
-# TODO: 휴지통 비우기
+# 휴지통 비우기
 def empty_trash(request):
     # TODO: Auth
     request.user_id = 1
 
     # Query Files
-    files = File.objects.filter(owner_user_id=request.user_id, is_trahsed=1, deleted_at__isnull=True)
+    files = File.objects.filter(owner_user_id=request.user_id, is_trashed=1, deleted_at__isnull=True)
 
     # First Depth
     del_list = []
@@ -92,24 +127,201 @@ def empty_trash(request):
         for del_file in child_files:
             del_check.append(del_file.id)
 
-    # TODO: S3 Delete
+    # S3 Delete
+    s3_delete(del_list)
 
     # Update
-    File.objects.filter(id__in=del_list).update(is_trahsed=1, deleted_at=timezone.now())
+    File.objects.filter(id__in=del_list).update(is_trashed=1, deleted_at=timezone.now())
 
     return {'result': True, 'affected': del_list}
 
 
-# TODO: 폴더/파일 조회, 파일 다운로드
+# 폴더/파일 조회
 def find_item(request, file_id):
-    return {'result': True}
+    # TODO: Auth
+    request.user_id = 1
+
+    # Query
+    file = File.objects.filter(id=file_id, deleted_at__isnull=True)
+
+    # Check Exists
+    if len(file) == 0:
+        return {'result': False, 'error': '잘못된 요청입니다.'}
+
+    # Check Owner
+    is_auth = False
+    if file[0].owner_user_id == request.user_id:
+        is_auth = True
+    is_my_group = GroupUser.objects.filter(group_id=file[0].owner_group_id, user_id=request.user_id)
+    if len(is_my_group) != 0:
+        is_auth = True
+
+    # Check Public
+    if file[0].is_public == 1:
+        is_auth = True
+    parent_id = file[0].parent_id
+    while True:
+        if parent_id is None or is_auth:
+            break
+        parent_file = File.objects.filter(id=parent_id)
+        if parent_file[0].is_public == 1:
+            is_auth = True
+        parent_id = parent_file[0].parent_id
+
+    # Check Auth
+    if is_auth is False:
+        return {'result': False, 'error': '잘못된 요청입니다.'}
+
+    # Return File
+    if file[0].type == 'file':
+        download_url = '%s/%s' % (settings.CDN_PATH, file[0].id)
+        download_url = sign_download(download_url)
+        data = {
+            'id': file[0].id,
+            'parent_id': file[0].parent_id,
+            'uploader_id': file[0].uploader_id,
+            'name': file[0].name,
+            'size': file[0].size,
+            'is_public': file[0].is_public,
+            'is_starred': file[0].is_starred,
+            'is_trashed': file[0].is_trashed,
+            'created_at': file[0].created_at,
+            'download_url': download_url,
+        }
+        return {'result': True, 'data': data}
+
+    # Query
+    files = File.objects.filter(parent_id=file[0].id, is_trashed=0, deleted_at__isnull=True)
+
+    # Structure
+    data = []
+    for file in files:
+        data.append({
+            'id': file.id,
+            'type': file.type,
+            'name': file.name,
+            'size': file.size,
+            'is_public': file.is_public,
+            'is_starred': file.is_starred,
+            'is_trashed': file.is_trashed,
+            'created_at': file.created_at,
+        })
+
+    # Return Folder
+    return {'result': True, 'data': data}
 
 
-# TODO: 폴더/파일 수정
+# 폴더/파일 수정
 def update_item(request, file_id):
+    # TODO: Auth
+    request.user_id = 1
+
+    # Load
+    try:
+        received = json.loads(request.body.decode('utf-8'))
+    except json.decoder.JSONDecodeError:
+        return {'result': False, 'error': '입력이 잘못되었습니다.'}
+
+    # Validate
+    if 'name' not in received \
+            and 'parent_id' not in received \
+            and 'is_public' not in received \
+            and 'is_starred' not in received \
+            and 'is_trashed' not in received:
+        return {'result': False, 'error': '입력이 누락되었습니다.'}
+
+    # Query
+    file = File.objects.filter(id=file_id, deleted_at__isnull=True)
+
+    # Check Exists
+    if len(file) == 0:
+        return {'result': False, 'error': '잘못된 요청입니다.'}
+
+    # Check Owner
+    is_auth = False
+    if file[0].owner_user_id == request.user_id:
+        is_auth = True
+    is_my_group = GroupUser.objects.filter(group_id=file[0].owner_group_id, user_id=request.user_id)
+    if len(is_my_group) != 0 \
+            and 'is_public' not in received \
+            and 'is_starred' not in received \
+            and 'is_trashed' not in received:
+        is_auth = True
+
+    # Check Parent
+    if 'parent_id' in received:
+        parent = File.objects.filter(id=received['parent_id'], type='folder', deleted_at__isnull=True)
+        if len(parent) == 0:
+            return {'result': False, 'error': '잘못된 요청입니다.'}
+        if (is_auth is True or len(is_my_group) != 0) \
+                and parent[0].owner_user_id == file[0].owner_user_id \
+                and parent[0].owner_group_id == file[0].owner_group_id \
+                and file_id != received['parent_id']:
+            is_auth = True
+        else:
+            is_auth = False
+
+    # Check Auth
+    if is_auth is False:
+        return {'result': False, 'error': '잘못된 요청입니다.'}
+
+    # Update
+    if 'name' in received:
+        file[0].name = received['name']
+    if 'parent_id' in received:
+        file[0].parent_id = received['parent_id']
+    if 'is_public' in received:
+        file[0].is_public = 1 if received['is_public'] is True else 0
+    if 'is_starred' in received:
+        file[0].is_starred = 1 if received['is_starred'] is True else 0
+    if 'is_trashed' in received:
+        if file[0].parent_id is None:
+            return {'result': False, 'error': '잘못된 요청입니다.'}
+        file[0].is_trashed = 1 if received['is_trashed'] is True else 0
+    file[0].save()
+
     return {'result': True}
 
 
-# TODO: 파일 복제
+# 파일 복제
 def copy(request, file_id):
-    return {'result': True}
+    # TODO: Auth
+    request.user_id = 1
+
+    # Get File
+    file = File.objects.filter(id=file_id, type='file', is_trashed=0, deleted_at__isnull=True)
+
+    # Check Exists
+    if len(file) == 0:
+        return {'result': False, 'error': '잘못된 요청입니다.'}
+
+    # Check Owner
+    is_auth = False
+    if file[0].owner_user_id == request.user_id:
+        is_auth = True
+    is_my_group = GroupUser.objects.filter(group_id=file[0].owner_group_id, user_id=request.user_id)
+    if len(is_my_group) != 0:
+        is_auth = True
+    if is_auth is False:
+        return {'result': False, 'error': '경로가 잘못되었습니다.'}
+
+    # Create UUID
+    new_file_id = uuid.uuid4()
+
+    # S3 Copy
+    s3_copy(file_id, new_file_id)
+
+    # Create
+    File.objects.create(
+        id=new_file_id,
+        parent_id=file[0].parent_id,
+        owner_user_id=file[0].owner_user_id,
+        owner_group_id=file[0].owner_group_id,
+        uploader_id=request.user_id,
+        type=file[0].type,
+        name='%s의 사본' % file[0].name,
+        size=file[0].size,
+        created_at=timezone.now()
+    )
+
+    return {'result': True, 'file_id': file_id}