from django.http import HttpResponse, JsonResponse, QueryDict
from django.views.decorators.csrf import csrf_exempt
from django.forms import model_to_dict
from .model_handler import PartAttachmentHandler, PartHandler, VendorHandler, EcnHandler, BOMsettingHandler
from .models import PartAttachment, VendorAttachment
from Info.model_handler import CompanyHandler, UserHandler
from Info.func import file_upload, get_file
from .func import part_info


def pn_check(request):
    company = CompanyHandler.get_by_id(request.session.get('company_id'))
    result = {'code': 1, 'content': None}
    if request.method == 'GET':
        part = PartHandler.exist_pn(request.GET.get('part_number'), company)
        if part:
            result = {'code': 1, 'content': "这个料号已经使用了。"}
        else:
            result = {'code': 0, 'content': None}

        return JsonResponse(result)


@csrf_exempt
def file(request):
    result = {'code': 1, 'content': None}
    company = CompanyHandler.get_by_id(request.session.get('company_id'))
    user = UserHandler.get_by_id(request.session.get('user_id'))

    if request.method == 'GET':
        return get_file(request)

    if request.method == 'POST':
        upload_result = file_upload(request, ['BOM', 'part'])
        if upload_result['code'] == 0:
            p_attachment = PartAttachment()
            p_attachment.company = company
            p_attachment.creator = user
            p_attachment.display_name = upload_result['target_file_name']
            p_attachment.url = upload_result['target_file_path'] + \
                upload_result['target_file_name']
            p_attachment.save()
            content = {'id': p_attachment.id, 'url': p_attachment.url,
                       'display_name': p_attachment.display_name}
            result['code'] = 0
            result['content'] = content
        else:
            result['content'] = '上传失败'
        return JsonResponse(result)

    if request.method == 'DELETE':
        post_data = eval(request.body)
        if PartAttachmentHandler.del_by_id(post_data['delete_attachment_id']):
            result = {'code': 0, 'content': None}
        else:
            result = {'code': 1, 'content': '删除失败'}
        return JsonResponse(result)


def search_part_number(request):
    if request.method == 'GET':
        result = {'code': 1, 'content': None, 'msg': None}
        company = CompanyHandler.get_by_id(request.session.get('company_id'))
        part_number_keyword = request.GET.get('part_number')
        parts = PartHandler.search_like_pn(part_number_keyword, company)
        part_list = []
        for p in parts:
            part_list.append(model_to_dict(p))
        result['code'] = 0
        result['content'] = part_list
        return JsonResponse(result)


def get_draft_part(request):        # 读取draft状态下的part数据
    if request.method == 'GET':
        result = {'code': 1, 'content': None, 'msg': None}
        company = CompanyHandler.get_by_id(request.session.get('company_id'))
        part = PartHandler.get_by_id(request.GET.get('edit_id'))
        if part.company != company:     # 校验part归属问题
            result = {'code': 1, 'content': None,
                      'msg': 'part is not for this company'}
            return JsonResponse(result)
        if part:
            # part_attachments = PartAttachmentHandler.search_by_part(part)
            # attachment_list = []
            # for p_a in part_attachments:
            #     attachment = {'id':p_a.id , 'url': p_a.url, 'display_name': p_a.display_name}
            #     attachment_list.append(attachment)
            # part_dict = model_to_dict(part)
            # part_dict['sub_parts'] = eval(part_dict['sub_parts'])
            # part_dict['attachment'] = attachment_list
            # vendor_detail = {}
            # if part.vendor:
            #     vendor_detail = {
            #         'id': part.vendor.id,
            #         'code': part.vendor.code,
            #         'name': part.vendor.name,
            #     }
            # part_dict['vendor_detail'] = vendor_detail
            part_dict = part_info(part)
            result = {'code': 0, 'content': part_dict, 'msg': 'success'}
        return JsonResponse(result)


def ecn_part_detail(request):       # 读取ECN具体签核料号的信息
    if request.method == 'GET':
        result = {'code': 1, 'content': None, 'msg': None}
        ECN_id = request.GET.get('ecn_id')
        if ECN_id:
            ecn = EcnHandler.get_by_id(ECN_id)
            company = CompanyHandler.get_by_id(
                request.session.get('company_id'))
            if ecn.target_part.company != company:     # 校验part归属问题
                result = {'code': 1, 'content': None,
                          'msg': 'part is not for this company'}
                return JsonResponse(result)
            content = {
                'ecn_id': ecn.id,
                'part': part_info(ecn.target_part)
            }
            result['content'] = content
            result['code'] = 0
        else:
            result['msg'] = 'ECN没有找到'

        return JsonResponse(result)


@csrf_exempt
def part_EOL(request):
    user = UserHandler.get_by_id(request.session.get('user_id'))
    company = CompanyHandler.get_by_id(request.session.get('company_id'))
    result = {'code': 1, 'content': None, 'msg': None}
    if request.method == 'POST':
        post_data = eval(request.body)
        EOL_pn = post_data['EOL_pn']
        part = PartHandler.get_by_pn(EOL_pn, company)
        all_ver_parts = PartHandler.all_ver_by_pn(EOL_pn, company)
        if user == part.owner:
            # 停用released料号
            part.life_cycle = 'EOL'
            part.save()
            # 删除签核中和草稿中的料号
            for p in all_ver_parts:
                if p.life_cycle in ['draft', 'sign-off']:
                    p.delete()
            result['msg'] = '料号{}停用成功'.format(EOL_pn)
            result['code'] = 0
            # 会直接删除料号相关的，签核中的ECN。关系是on_delete.cascade
            # 会直接删除料号相关签核中的签核。关系是on_delete.cascade
        else:
            result['msg'] = '料号停用失败'
            result['content'] = '非料号用户本人'

        return JsonResponse(result)


def attachment_maxsize(request):        # 获取BOM附件大小限制
    # user = UserHandler.get_by_id(request.session.get('user_id'))
    company = CompanyHandler.get_by_id(request.session.get('company_id'))
    result = {'code': 1, 'content': None, 'msg': None}

    attachment_maxsize = BOMsettingHandler.get_attachment_maxsize(company)
    if attachment_maxsize:
        result['code'] = 0
        result['content'] = {
            'company_id': company.id,
            'attachment_maxsize': attachment_maxsize
        }
    return JsonResponse(result)