from django.contrib import admin
from django.utils.html import format_html
from django.apps import apps

from beer.models import Batch, Recipe, Mash, MashStep, \
    RecipeFermentable, RecipeHop, RecipeMisc, RecipeYeast
from yeast.models import Yeast

from config.extras import BREWFATHER_APP_ROOT


class SampleInline(admin.TabularInline):
    model = Yeast
    extra = 0


class FermentableInline(admin.TabularInline):
    model = RecipeFermentable
    extra = 1


class HopInline(admin.TabularInline):
    model = RecipeHop
    extra = 1


class MiscInline(admin.TabularInline):
    model = RecipeMisc
    extra = 1


class StrainInline(admin.TabularInline):
    model = RecipeYeast
    extra = 1


@admin.register(Recipe)
class RecipeAdmin(admin.ModelAdmin):
    list_display = ['name', 'total_extract_kg']
    inlines = [
        FermentableInline,
        HopInline,
        MiscInline,
        StrainInline
    ]


@admin.register(Batch)
class BeerBatchAdmin(admin.ModelAdmin):
    list_display = [
        'brewfather_id',
        'batch_url',
        'brewhouse_efficiency',
        'conversion_efficiency',
    ]
    inlines = [
        SampleInline,
    ]

    fieldsets = [
        [None, {
           'fields': [
                ('brewfather_id', 'brewfather_num', 'brewfather_name'),
                'recipe',
            ]
        }],
        ['Mash', {
            'fields': ['first_runnings', 'mash_ph'],
        }],
        ['Boil', {
            'fields': [
                ('pre_boil_vol', 'pre_boil_sg'),
                ('post_boil_vol', 'post_boil_sg'),
            ],
        }],
        ['Ferment', {
            'fields': [
                ('fermenter_topup_vol', 'fermenter_vol'),
                ('original_sg', 'final_sg'),
            ],
        }],
    ]

    def batch_url(self, obj):
        url_string = ('<a href="{root}/tabs/batches/batch/{batch_id}">'
                      'Brewfather Batch ID: {batch_id}</a>')
        bf_id = obj.brewfather_id
        return format_html(
            url_string,
            batch_id=bf_id,
            root=BREWFATHER_APP_ROOT
        )


class MashStepInline(admin.TabularInline):
    model = MashStep
    extra = 1


@admin.register(Mash)
class MashAdmin(admin.ModelAdmin):
    list_display = ['name', ]
    inlines = [
        MashStepInline,
    ]


app = apps.get_app_config('beer')
for model_name, model in app.models.items():

    try:
        admin.site.register(model)
    except admin.exceptions.AlreadyRegistered:
        pass