from django.contrib import admin
from django.db import models
from django.urls import reverse
from django.utils.html import format_html
from rangefilter.filters import DateRangeFilterBuilder

from common.admin import MyImportExportModelAdmin
from traveller.adminClone import CloneModelAdmin
from traveller.admin_mixins import SchoolRollMixin, TravellerRollMixin
from traveller.models import Family, TravellerRoute, Traveller, School, ContactPerson


class FamilyInline(admin.StackedInline):
    model = Family
    classes = ['collapse']
    extra = 0
    clone_parent = "traveller"
    autocomplete_fields = [
        "location",
        "postal_location",
        "contact_A",
        "contact_B",
        "emergency_contact_A",
        "emergency_contact_B",
    ]

    readonly_fields = [
        "contact_A_phone_display",
        "contact_A_email_display",
        "contact_B_phone_display",
        "contact_B_email_display",
        "emergency_contact_A_phone_display",
        "emergency_contact_A_email_display",
        "emergency_contact_B_phone_display",
        "emergency_contact_B_email_display",
    ]

    fieldsets = (
        ("Residential Address", {
            "fields": ("location",)
        }),

        ("Postal Address", {
            "fields": ("postal_location",)
        }),

        ("Parents / Guardians", {
            "fields": (
                "contact_A_relation",
                "contact_A",
                "contact_A_phone_display",
                "contact_A_email_display",
                "contact_B_relation",
                "contact_B",
                "contact_B_phone_display",
                "contact_B_email_display",
            )
        }),

        ("Emergency Contacts", {
            "fields": (
                "emergency_contact_A_relation",
                "emergency_contact_A",
                "emergency_contact_A_phone_display",
                "emergency_contact_A_email_display",
                "emergency_contact_B_relation",
                "emergency_contact_B",
                "emergency_contact_B_phone_display",
                "emergency_contact_B_email_display",
            )
        }),
    )

    def contact_A_phone_display(self, obj):
        return obj.contact_A.phone if obj.contact_A else "-"

    def contact_A_email_display(self, obj):
        return obj.contact_A.email if obj.contact_A else "-"

    def contact_B_phone_display(self, obj):
        return obj.contact_B.phone if obj.contact_B else "-"

    def contact_B_email_display(self, obj):
        return obj.contact_B.email if obj.contact_B else "-"

    def emergency_contact_A_phone_display(self, obj):
        return obj.emergency_contact_A.phone if obj.emergency_contact_A else "-"

    def emergency_contact_A_email_display(self, obj):
        return obj.emergency_contact_A.email if obj.emergency_contact_A else "-"

    def emergency_contact_B_phone_display(self, obj):
        return obj.emergency_contact_B.phone if obj.emergency_contact_B else "-"

    def emergency_contact_B_email_display(self, obj):
        return obj.emergency_contact_B.email if obj.emergency_contact_B else "-"

    contact_A_phone_display.short_description = "Phone"
    contact_A_email_display.short_description = "Email"
    contact_B_phone_display.short_description = "Phone"
    contact_B_email_display.short_description = "Email"
    emergency_contact_A_phone_display.short_description = "Phone"
    emergency_contact_A_email_display.short_description = "Email"
    emergency_contact_B_phone_display.short_description = "Phone"
    emergency_contact_B_email_display.short_description = "Email"


class TravellerRouteInline(admin.TabularInline):
    model = TravellerRoute
    extra = 0
    clone_parent = "traveller"


@admin.register(Traveller)
class TravellerAdmin(MyImportExportModelAdmin, CloneModelAdmin, TravellerRollMixin):
    list_display = ["first_name", "last_name", "school", "year_level", "is_active", "address", "stop_route", "shuttle", "travel_start_date", "travel_end_date"]
    list_filter = [
        "is_active", "school", "year_level", "eligibility_status", "bus_stops__bus", "shuttle",
        ("travel_start_date", DateRangeFilterBuilder(
            title="Start date"
        )),
        ("travel_end_date", DateRangeFilterBuilder(
            title="End date"
        ))
    ]
    cloneable_fields = ["last_name"]
    search_fields = ["first_name", "last_name", "address"]
    inlines = [FamilyInline, TravellerRouteInline]
    readonly_fields = ["travel_start_date", "travel_end_date", "created_on", "last_edit", "is_active", "address"]
    actions = ["export_to_csv", "send_sms", "confirmation_letter", "letter_creator"]
    fieldsets = [
        (None, {
            'fields': [
                "is_active",
                "school",
                "first_name",
                "last_name",
                "year_level",
                "dob",
                "address",
            ]
        }),
        ('Office Use', {
            'classes': ('collapse',),
            'fields': [
                "distance_to_school",
                "travel_start_date",
                "travel_end_date",
                "eligibility_status",
                "term_1_paid",
                "term_2_paid",
                "term_3_paid",
                "term_4_paid",
                "assessment_date",
                "application_form_completed",
                "parent_notified",
                "seat_number",
                "created_on",
                "last_edit",
            ]
        }),
        (None, {'fields': ["notes", "shuttle"]})
    ]
    # list_display_links = None

    def stop_route(self, obj):
        from transport.models import BusStop
        stops = BusStop.objects.filter(traveller__id__exact=obj.id)
        if stops.count() == 0:
            return ""
        if stops.count() == 1:
            return stops.first()
        return "Multiple"

    # def save_model(self, request, obj, form, change):
        # if obj.is_archived and obj.travel_end_date is None:
        #    obj.is_archived = False
        # super().save_model(request, obj, form, change)

@admin.register(ContactPerson)
class ContactPersonAdmin(MyImportExportModelAdmin):
    list_display = [
        "first_name",
        "last_name",
        "phone",
        "email"
    ]

    search_fields = [
        "first_name",
        "last_name",
        "phone",
        "email",
    ]

    readonly_fields = [
        "traveller_relationship_summary"
    ]

    fieldsets = (
        (None, {
            "fields": ("first_name", "last_name", "phone", "email")
        }),

        ("Relationships", {
            "fields": ("traveller_relationship_summary",)
        }),
    )

    def traveller_relationship_summary(self, obj):
        from django.utils.html import format_html

        families = Family.objects.filter(
            models.Q(contact_A=obj) |
            models.Q(contact_B=obj) |
            models.Q(emergency_contact_A=obj) |
            models.Q(emergency_contact_B=obj)
        ).select_related("traveller", "location")

        if not families.exists():
            return "No traveller relationships"

        output = []

        for family in families:
            traveller = family.traveller

            relation = ""
            if family.contact_A == obj:
                relation = family.contact_A_relation
            elif family.contact_B == obj:
                relation = family.contact_B_relation
            elif family.emergency_contact_A == obj:
                relation = family.emergency_contact_A_relation
            elif family.emergency_contact_B == obj:
                relation = family.emergency_contact_B_relation

            address = family.location if family.location else "No address"

            url = reverse(
                "admin:traveller_traveller_change",
                args=[traveller.id]
            )

            output.append(
                format_html(
                    '<a href="{}">{}</a> ({})<br>'
                    '<small style="color:#888">{}</small>',
                    url,
                    f"{traveller.first_name} {traveller.last_name}",
                    relation,
                    address
                )
            )

            return format_html("".join(output))

    traveller_relationship_summary.short_description = "Traveller Relationships"

# @admin.register(Family)
class FamilyAdmin(MyImportExportModelAdmin, admin.ModelAdmin):
    list_display = ["traveller", "__str__",
                    "parent_A_firstname", "parent_A_lastname", "parent_A_phone",
                    "parent_B_firstname", "parent_B_lastname", "parent_B_phone",
                    "emergency_contact_A_firstname", "emergency_contact_A_lastname", "emergency_contact_A_phone",
                    "emergency_contact_B_firstname", "emergency_contact_B_lastname", "emergency_contact_B_phone"]


# @admin.register(TravellerRoute)
class TravellerRouteAdmin(MyImportExportModelAdmin, admin.ModelAdmin):
    list_display = ["traveller", "busStop"]


@admin.register(School)
class SchoolAdmin(MyImportExportModelAdmin, admin.ModelAdmin, SchoolRollMixin):
    list_display = ["__str__", "address", "suburb", "school_email", "phone"]
    actions = ["email_travellers_to_school", "show_school_travellers", "export_travellers_to_csv"]

    def school_email(self, obj):
        return format_html('<a href="mailto:{}">{}</a>', obj.email, obj.email)