from datetime import datetime, timedelta

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

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

class GenVisit(Model):
    _name="clinic.gen.visit"
    _transient=True
    
    _fields={
        'date_from': fields.Date("From", required=True),
        'date_to': fields.Date("To", required=True),
        'patient_lines': fields.One2Many("clinic.gen.visit.line","gen_id","Patient Lines"),
        'patient_type_id': fields.Many2One("clinic.patient.type","Patient Type"),
        'patient_categ_id': fields.Many2One("clinic.patient.categ", "Patient Category"),
        'time_lines': fields.One2Many("clinic.gen.visit.time","gen_id","Time Lines"),
        'department_id': fields.Many2One("clinic.department","Department"),
        'doctor_id': fields.Many2One("clinic.staff","Doctor",domain=[['type','=','doctor']]),
    }
    

    def _get_patient_lines(self,context={}):
        ids=context.get("ids")
        if not ids:
            ids=[context.get("refer_id")]
        lines=[]
        if any(ids):
            lines=[{'patient_id': id} for id in ids if type(id)==type(1)]
        return lines

    def _get_time_lines(self,context={}):
        return [
            {'day': 'mon',},
            {'day': 'tue',},
            {'day': 'wed',},
            {'day': 'thu',},
            {'day': 'fri',},
            {'day': 'sat',},
            {'day': 'sun',},
        ]

    _defaults={
        'date_from': lambda *a: datetime.now().strftime(FMT_DATE),
        'date_to': lambda *a: (datetime.now()+timedelta(days=7)).strftime(FMT_DATE),
        'patient_lines': _get_patient_lines,
        'time_lines': _get_time_lines,
    }
    
    def onchange_cycle(self,context={}):
        data=context['data']
        cycle_id=data['cycle_id']
        if cycle_id:
            cycle=get_model('clinic.cycle').browse(cycle_id)
            data['time_start']=cycle.time_start
            data['time_stop']=cycle.time_stop
        else:
            data['time_start']=''
            data['time_stop']=''
        return data

    def gen_visit(self,ids,context):
        obj=self.browse(ids)[0]
        visit_obj=get_model('clinic.visit')
        b_ids=get_model('clinic.branch').search([])
        branch_id=None
        if b_ids:
            branch_id=b_ids[0]
        days={}
        for tline in obj.time_lines:
            if tline.day and tline.cycle_id and tline.time_start and tline.time_stop:
                day=tline.day
                cycle_id=tline.cycle_id.id
                time_start=tline.time_start
                time_stop=tline.time_stop
                d=0
                if day=='mon':
                    d=1
                elif day=='tue':
                    d=2
                elif day=='wed':
                    d=3
                elif day=='thu':
                    d=4
                elif day=='fri':
                    d=5
                elif day=='sat':
                    d=6
                elif day=='sun':
                    d=7
                days.update({
                    d:{
                    'cycle_id': cycle_id,
                    'time_start': time_start,
                    'time_stop': time_stop,
                    }})
        if not days:
            raise Exception("Please select Days")

        visit_vals=[]
        date_from=datetime.strptime(obj.date_from,FMT_DATE)
        date_to=datetime.strptime(obj.date_to,FMT_DATE)
        patients=[p.patient_id.id for p in obj.patient_lines if p.patient_id]
        if not patients and obj.patient_type_id:
            patients=get_model("clinic.patient").search([['type_id','=',obj.patient_type_id.id]])
            if not patients:
                raise Exception("No patient for type %s"%obj.patient_type_id.name)
        elif not patients and obj.patient_categ_id:
            patients=get_model("clinic.patient").search([['categ_id','=',obj.patient_categ_id.id]])
            if not patients:
                raise Exception("No patient for category %s"%obj.patient_categ_id.name)
        elif patients:
            # continue to generate with condition
            pass
        else:
            raise Exception("Please select some patient or patient type")

        day_choices=days.keys()
        for patient_id in patients:
            patient=get_model("clinic.patient").browse(patient_id)
            ntoday=1
            day_total=(date_to-date_from).days+ntoday
            for weekday in day_choices:
                wd=date_from.weekday() 
                start_date=date_from
                while wd != weekday-1:
                    start_date+=timedelta(days=1)
                    wd=start_date.weekday()
                #XXX should gen only in scope
                if start_date.strftime(FMT_DATE) > date_to.strftime(FMT_DATE):
                    continue
                count=0
                tmp=start_date
                cstart=days[weekday]['time_start']
                cstop=days[weekday]['time_stop']
                while count < day_total:
                    tmp=start_date+timedelta(days=count)
                    visit_date="%s"%(tmp.strftime(FMT_DATE))
                    ttime_start="%s %s" % (visit_date,cstart)
                    ttime_stop="%s %s" % (visit_date,cstop)
                    vals={
                        'patient_id': patient_id,
                        'doctor_id': obj.doctor_id.id or patient.doctor_id.id,
                        'department_id': patient.department_id.id,
                        'branch_id': patient.branch_id.id or branch_id,
                        'cycle_id': days[weekday]['cycle_id'],
                        'time_start': ttime_start,
                        'time_stop': ttime_stop,
                        'visit_date': visit_date,
                        'state': 'pending',
                    }
                    visit_vals.append(vals)
                    count+=7

                    dom=[]
                    dom.append(['time_start','>=','%s %s'%(tmp.strftime(FMT_DATE)[0:10],' 00:00:00')])
                    dom.append(['time_stop','<=','%s %s'%(tmp.strftime(FMT_DATE)[0:10],' 23:59:59')])
                    dom.append(['patient_id', '=', patient_id])
                    dom.append(['cycle_id', '=', days[weekday]['cycle_id']])
                    dom.append(['state','=','pending'])
                    vids=visit_obj.search(dom)
                    visit_obj.delete(vids)
                start_date=tmp
        user_id=get_active_user()
        staff_ids=get_model("clinic.staff").search([['type','=','type'],['user_id','=',user_id]])
        confirm_id=None
        if staff_ids:
            confirm_id=staff_ids[0]
        for vals in visit_vals:
            print("vals ", vals)
            vals['nurse_id']=confirm_id
            visit_obj.create(vals)
        return {
            'next': {
                'name': 'clinic_visit',
                'mode': 'list',
            },
            'flash': 'Generate OK',
        }

    def clear_visit(self,ids,context={}):
        obj=self.browse(ids)[0]
        days={}
        for tline in obj.time_lines:
            if tline.day and tline.cycle_id and tline.time_start and tline.time_stop:
                day=tline.day
                cycle_id=tline.cycle_id.id
                time_start=tline.time_start
                time_stop=tline.time_stop
                d=0
                if day=='mon':
                    d=1
                elif day=='tue':
                    d=2
                elif day=='wed':
                    d=3
                elif day=='thu':
                    d=4
                elif day=='fri':
                    d=5
                elif day=='sat':
                    d=6
                elif day=='sun':
                    d=7
                days.update({
                    d:{
                    'cycle_id': cycle_id,
                    'time_start': time_start,
                    'time_stop': time_stop,
                    }})
        if not days:
            raise Exception("Please select Days")

        visit_ids=[]
        date_from=datetime.strptime(obj.date_from,FMT_DATE)
        date_to=datetime.strptime(obj.date_to,FMT_DATE)
        # FIXME add more 1 week for make sure
        date_to2=(date_to+timedelta(days=7)).strftime(FMT_DATETIME)
        visit_obj=get_model("clinic.visit")

        patients=[p.patient_id.id for p in obj.patient_lines if p.patient_id]
        if not patients and obj.patient_type:
            patients=get_model("clinic.patient").search([['type','=',obj.patient_type]])
        elif not patients and obj.patient_categ_id:
            patients=get_model("clinic.patient").search([['categ_id','=',obj.patient_categ_id.id]])
        elif patients:
            pass
        else:
            dom=[]
            dom.append(['time_start','>=','%s %s'%(obj.date_from[0:10],' 00:00:00')])
            dom.append(['time_stop','<=','%s %s'%(date_to2[0:10],' 23:59:59')])
            dom.append(['state','=','pending'])
            vids=visit_obj.search(dom)
            visit_obj.delete(vids)
            return {
                'next': {
                    'name': 'clinic_gen_visit_form',
                    'mode': 'form',
                },
                'flash': 'Clear %s visits'%len(vids),
            }

        day_choices=days.keys()
        if day_choices:
            for patient_id in patients:
                # loop days in weekend
                ntoday=1
                day_total=(date_to-date_from).days+ntoday
                for weekday in day_choices:
                    wd=date_from.weekday() 
                    start_date=date_from
                    while wd != weekday-1:
                        start_date+=timedelta(days=1)
                        wd=start_date.weekday()
                    #XXX should gen only in scop
                    if start_date.strftime(FMT_DATE) > date_to.strftime(FMT_DATE):
                        continue
                    count=0
                    tmp=start_date
                    while count < day_total:
                        tmp=start_date+timedelta(days=count)
                        time_start="%s 00:00:00" % (tmp.strftime(FMT_DATE))
                        time_stop="%s 23:59:59" % (tmp.strftime(FMT_DATE))
                        dom=[]
                        dom.append(['time_start','>=','%s'%time_start])
                        dom.append(['time_stop','<=','%s'%time_stop])
                        dom.append(['patient_id','=','%s'%patient_id])
                        dom.append(['cycle_id','=','%s'%days[weekday]['cycle_id']])
                        dom.append(['state','=','pending'])
                        count+=7
                        vids=visit_obj.search(dom)
                        print('x dom ', vids)
                        if vids:
                            visit_ids.append(vids[0])
                    start_date=tmp
        else:
            # discard
            time_start=obj.date_from
            time_stop=obj.date_to
            for patient_id in patients:
                dom=[]
                dom.append(['time_start','>=','%s'%time_start])
                dom.append(['time_stop','<=','%s'%time_stop])
                dom.append(['patient_id','=','%s'%patient_id])
                dom.append(['state','=','pending'])
                print('dom ', dom)
                vids=visit_obj.search(dom)
                if vids:
                    visit_ids.append(vids[0])
        if visit_ids:
            get_model("clinic.visit").delete(visit_ids)

        return {
            'next': {
                'name': 'clinic_visit',
                'mode': 'list',
            },
            'flash': 'Clear %s visits'%len(visit_ids),
        }

    def onchange_cycle_line(self,context={}):
        data=context['data']
        path=context['path']
        line=get_data_path(data,path,parent=True)
        cycle_id=line['cycle_id']
        if cycle_id:
            cycle=get_model('clinic.cycle').browse(cycle_id)
            line['time_start']=cycle.time_start
            line['time_stop']=cycle.time_stop
        return data
    

GenVisit.register()