import time
from datetime import datetime, timedelta

from netforce.model import Model, fields, get_model
from netforce.access import get_active_company, get_active_user, set_active_user

FMT_DATE="%Y-%m-%d %H:%M:%S"

class Visit(Model):
    _name="clinic.visit"
    _string="Visit"
    _audit_log=True
    _name_field="number"
    _multi_company=True

    def _get_print_date(self,ids,context={}):
        res={}
        for obj in self.browse(ids):
            res[obj.id]=datetime.now().strftime("%Y-%m-%d %H:%M:%S")
        return res
    
    def _get_all(self,ids,context={}):
        res={}
        for obj in self.browse(ids):
            cycle=obj.cycle_id
            color=cycle.color
            res[obj.id]={
                'cycle_color': color,
                'sequence': '%s-%s'%(obj.time_start[0:10],cycle.sequence), #date-sequence
                #'visit_date': obj.time_start[0:10]
            }
        return res

    _fields={
        "number": fields.Char("Number",required=True,search=True),
        "time_start": fields.DateTime("Start Time",required=True),
        "time_stop": fields.DateTime("End Time",required=True),
        "patient_id": fields.Many2One("clinic.patient","Patient",required=True,search=True),
        "doctor_id": fields.Many2One("clinic.staff","Doctor", domain=[['type','=','doctor']],search=True),
        "nurse_id": fields.Many2One("clinic.staff","Confirm By", domain=[['type','=','nurse']],search=True),
        "department_id": fields.Many2One("clinic.department", "Department",search=True),
        "comments": fields.One2Many("message","related_id","Comments"),
        "company_id": fields.Many2One("company","Company"),
        'hd_cases': fields.One2Many('clinic.hd.case','visit_id',"HD Cases",readonly=True),
        "cycle_id": fields.Many2One("clinic.cycle","Cycle"),
        "state": fields.Selection([["draft","Draft"],['pending','Pending'],["confirmed","Confirmed"],["cancelled","Cancelled"]],"Status",required=True),
        "comments": fields.One2Many("message","related_id","Comments"),
        'print_date': fields.Date('Print Date',function="_get_print_date"),
        'cycle_item_id': fields.Many2One("clinic.cycle.item","Cycle Item"), #XXX on_delete="cascade" -> rm visit from cycle item
        'sequence': fields.Char("Sequence",function="_get_all",function_multi=True,store=True),
        'visit_date': fields.Date('Visit Date'),
        'cycle_color': fields.Char('Color',function="_get_all",function_multi=True,store=True),
        'note': fields.Text('Note'),
    }

    def _get_number(self,context={}):
        while 1:
            seq_name='Clinic Visit'
            seq_id=get_model("sequence").find_sequence(name=seq_name)
            if not seq_id:
                raise Exception("Can not found sequence %s"%seq_name)
            num=get_model("sequence").get_next_number(seq_id,context=context)
            if not num:
                return None
            user_id=get_active_user()
            set_active_user(1)
            res=self.search([["number","=",num]])
            set_active_user(user_id)
            if not res:
                return num
            get_model("sequence").increment_number(seq_id,context=context)

    def _get_nurse(self,context={}):
        user_id=get_active_user()
        nurse_ids=get_model("clinic.staff").search([['user_id','=',user_id],['type','=','nurse']])
        if nurse_ids:
            return nurse_ids[0]
        return None 

    def _get_time_start(self,context={}):
        now=datetime.now()
        starttime=now.strftime("%Y-%m-%d %H:%M:%S")
        return starttime

    def _get_time_stop(self,context={}):
        hr=timedelta(seconds=3600)
        now=datetime.now()
        stoptime=(now+hr).strftime("%Y-%m-%d %H:%M:%S")
        return stoptime

    _defaults={
        "state": "draft",
        'time_start': _get_time_start,
        'time_stop': _get_time_stop,
        'visit_date': lambda *a: time.strftime("%Y-%m-%d"),
        "number": "/",
        "company_id": lambda *a: get_active_company(),
        'nurse_id': _get_nurse,
    }

    _order="sequence"
    
    def new_dlz(self,patient_id):
        if not patient_id:
            raise Exception("No Patient to creat Dialyzer")
        dlz_vals=get_model("clinic.dialyzer").default_get()
        dlz_vals['product_id']=dlz_vals['product_id'][0]
        dlz_vals['company_id']=dlz_vals['company_id'][0]
        dlz_vals['patient_id']=patient_id
        dlz_id=get_model('clinic.dialyzer').create(dlz_vals)
        dialyzer=get_model("clinic.dialyzer").browse(dlz_id)
        dialyzer.confirm()
        return dlz_id

    def get_dlz(self,visit_id):
        obj=self.browse(visit_id)
        patient=obj.patient_id
        dialyzers=get_model("clinic.dialyzer").search_browse([['patient_id','=',patient.id],['state','=','active']])
        if not dialyzers:
            dlz_id=self.new_dlz(patient.id)
            dialyzer=get_model("clinic.dialyzer").browse(dlz_id)
        else:
            dialyzer=dialyzers[-1]
        use_time=dialyzer.use_time or 0
        max_time=dialyzer.max_use_time or 0
        if use_time > max_time:
            dialyzer.write({
                'state': 'expire',
            })
            # get new dialyzer
            dlz_id=self.new_dlz(patient.id)
            dialyzer=get_model("clinic.dialyzer").browse(dlz_id)
            #raise Exception("%s is expired"%dialyzer.number)
        use_time+=1
        vals={
            "description": dialyzer.description or dialyzer.product_id.name or "",
            "use_time": use_time,
            "max_use_time": dialyzer.max_use_time,
            "member_type": dialyzer.member_type,
            "dialyzer_type": dialyzer.dialyzer_type,
            "bid_flow_rate": dialyzer.bid_flow_rate,
            "ultrafittration": dialyzer.ultrafittration,
            "state": dialyzer.state,
            'dialyzer_id': dialyzer.id,
        }
        return vals

    def confirm(self,ids,context={}):
        obj=self.browse(ids)[0]
        number=obj.number
        if number=="/" or not number:
            number=self._get_number(context)
        vals={
            'number': number,
            'state': 'confirmed',
            }
        user_id=get_active_user()
        staff=get_model("clinic.staff").search_browse([['user_id','=',user_id]])
        if staff:
            vals['nurse_id']=staff[0].id
        obj.write(vals)
        hd_case_obj=get_model("clinic.hd.case")
        vals={
            'patient_id': obj.patient_id.id,
            'nurse_id': obj.nurse_id.id,
            'department_id': obj.department_id.id,
            'time_start': obj.time_start,
            'time_stop': obj.time_stop,
            'cycle_id' : obj.cycle_id.id,
            'visit_id': obj.id,
            'lines':[],
            'dialyzers': [],
            'staffs': [],
            'state': 'waiting_treatment',
            }

        st=get_model("clinic.setting").browse(1)
        if st.find_dlz:
            dialyzer=self.get_dlz(obj.id)
            #XXX
            del dialyzer['state']
            del dialyzer['ultrafittration']
            del dialyzer['bid_flow_rate']
            del dialyzer['member_type']
            vals['dialyzers'].append(('create',dialyzer))
        
        # use exist hd_case (in case set to draft)
        hd_case_id=None
        if obj.hd_cases:
            hd_case=obj.hd_cases[0]
            hd_case.write(vals) 
            hd_case_id=hd_case.id
        else:
            hd_case_id=hd_case_obj.create(vals)

        if context.get("called"): #XXX call outside
            return hd_case_id

        date=vals['time_start'][0:10]
        cycle=obj.cycle_id
        dom=[]
        dom.append(['date','=',date])
        dom.append(['cycle_id','=',cycle.id])
        item_obj=get_model('clinic.cycle.item')
        item_ids=item_obj.search(dom)

        def get_schedule(date):
            dom=[]
            dom.append(['date','=',date])
            schedule=None
            schedules=get_model("clinic.schedule").search_browse(dom)
            if schedules:
                schedule=schedules[0]
            return schedule

        item_vals={
            'cycle_id': cycle.id,
            'date': date,
            'nurses': [],
            }
        
        item_id=None
        if not item_ids:
            item_id=item_obj.create(item_vals)
        else:
            # clear old nurse in cycle item
            item_id=item_ids[0]
            item=item_obj.browse(item_id)
            if item.state!='draft':
                for nurse in item.nurses:
                    nurse.delete()

        item=item_obj.browse(item_id)
        if item.state!='draft':
            schedule=get_schedule(date)
            if schedule:
                for line in schedule.lines:
                    if line.cycle_id.id==cycle.id:
                        nurse=line.nurse_id
                        item_vals['nurses'].append(('create',{
                            'nurse_id': nurse.id,
                            'level_id': nurse.level_id.id,
                        }))
            item.write(item_vals)

        obj.write({
            'cycle_item_id': item_id,
        })

        hd_case=hd_case_obj.browse(hd_case_id)
        hd_case.write({
             'cycle_item_id': item_id,
        })

        return {
            'next': {
                'name': 'clinic_hd_case',
                'mode': 'form',
                'active_id': hd_case_id,
            },
            'flash': 'Visit has been confirmed',
        }

    def discard(self,ids,context={}):
        obj=self.browse(ids)[0]
        obj.write({"state":"cancelled"})

    def reopen(self,ids,context={ }):
        obj=self.browse(ids)[0]
        obj.write({"state":"draf t"})

    def onchange_patient(self,context={}):
        data=context['data']
        patient_id=data['patient_id']
        patient=get_model("clinic.patient").browse(patient_id)
        visits=self.search_browse([['patient_id','=',patient_id]],order="number desc")
        if visits:
            visit=visits[0]
            doctor=visit.doctor_id
            department=visit.department_id
            if not department:
                department=patient.department_id
            data['doctor_id']=doctor.id
            data['department_id']=department.id
            if not patient.doctor_id:
                patient.write({
                    'doctor_id': doctor.id,
                })
        else:
            doctor=patient.doctor_id
            department=patient.department_id
            data['doctor_id']=doctor.id
            data['department_id']=department.id
            
        return data 
    
    def copy(self,ids,context={}) :
        obj=self.browse(ids[0])
        vals={
            'patient_id': obj.patient_id.id,
            'doctor_id': obj.doctor_id.id,
            'nurse_id': obj.nurse_id.id,
            'department_id': obj.department_id.id,
            'cycle_id': obj.cycle_id.id,
            'time_start': obj.time_start,
            'time_stop': obj.time_stop,
            'visit_date': obj.visit_date,
        }
        new_id=self.create(vals,context=context)
        return {
            'next':{
               'name': 'clinic_visit',
               'mode': 'form',
               'active_id': new_id,
            },

            'flash': 'Visit %s successfully'%(obj.number),
        }
            
    
    def delete(self,ids,context={}):
        for obj in self.browse(ids):
            if obj.state not in ('draft','pending'):
                raise Exception("Can not delete visit %s because state is not draft!"%obj.number)
        super().delete(ids,context=context)
    
    def get_data(self,context={}):
        ref_id=context.get("refer_id")
        if not ref_id:
            return {}
        ref_id=int(ref_id)
        obj=self.browse(ref_id)
        data={
            'number': obj.number,
            'date_visit': obj.date_visit,
            'department_name': obj.department_id.name or "",
            'patient_name': obj.patient_id.name or "",
            'doctor_name': obj.doctor_id.name or "",
            'nurse_name': obj.nurse_id.name or "",
            'print_date': time.strftime("%d/%m/%Y"),
            'cycle_name': obj.cycle_id.name or "",
        }
        return data 

    def onchange_cycle(self,context={}):
        data=context['data']
        cycle_id=data['cycle_id']
        date=data['visit_date']
        if not date:
            date=data['time_start'][0:10]
        if cycle_id:
            cycle=get_model('clinic.cycle').browse(cycle_id)
            data['time_start']=date+' %s:00'%cycle.time_start
            data['time_stop']=date+' %s:00'%cycle.time_stop
        return data
    
    def onchange_date(self,context={}):
        data=context['data']
        date=data['visit_date']
        time_start=data['time_start'][11:]
        time_stop=data['time_stop'][11:]
        data['time_start']='%s %s'%(date,time_start)
        data['time_stop']='%s %s'%(date,time_stop)
        return data

    def onchange_datefrom(self,context={}):
        data=context['data']
        data['visit_date']=data['time_start'][0:10]
        return data

    def to_draft(self,ids,context={}):
        obj=self.browse(ids)[0]
        for hd_case in obj.hd_cases:
            hd_case.to_draft()
            for line in hd_case.lines:
                line.delete()
            for ps in hd_case.staffs:
                ps.delete()
            #hd_case.delete()
        obj.write({
            'state': 'draft',
        })
    
    def gen_no(self,ids,context={}):
        obj=self.browse(ids)[0]
        if obj.number != '/' or obj.state!='draft':
            return
        number=self._get_number(context)
        obj.write({
            'number': number,
        })
        return {
            'next': {
                'name': 'clinic_visit',
                'mode': 'form',
                'active_id': obj.id,
            },
            'flash': 'Generate number succesfully',
        }
    
    def cancel(self,ids,context={}):
        obj=self.browse(ids)[0]
        obj.write({
            'state': 'cancelled',
        })
        return {
            'next': {
                'name': 'clinic_visit',
                'mode': 'form',
                'active_id': obj.id,
            },
            'flash': 'Visit\'s %s has been cancelled'%obj.patient_id.name
        }

    def create(self, vals,**kw):
        new_id=super().create(vals,**kw)
        self.function_store([new_id])
        return new_id
    
    def write(self,ids,vals,**kw):
        super().write(ids,vals,**kw)
        self.function_store(ids)
    
    def pending(self,ids,context={}):
        obj=self.browse(ids)[0]
        obj.write({
            'state': 'pending',
        })

Visit.register()