from django.contrib import messages
from . import models
from .utils import extract_summary_from_pdf

from django.contrib import admin
from django.contrib.auth.admin import UserAdmin as BaseUserAdmin
from django.contrib.auth.admin import GroupAdmin as BaseGroupAdmin
from django.contrib.auth.models import User, Group
from .models import FormTemplate, FormStage, FormField, FormSubmission, FieldResponse
from unfold.forms import AdminPasswordChangeForm, UserChangeForm, UserCreationForm
from unfold.admin import ModelAdmin


admin.site.unregister(User)
admin.site.unregister(Group)


@admin.register(User)
class UserAdmin(BaseUserAdmin, ModelAdmin):
    form = UserChangeForm
    add_form = UserCreationForm
    change_password_form = AdminPasswordChangeForm


@admin.register(Group)
class GroupAdmin(BaseGroupAdmin, ModelAdmin):
    pass


@admin.register(models.Job)
class JobAdmin(ModelAdmin):
    list_display = ('title', 'is_published', 'posted_to_linkedin', 'created_at')
    list_filter = ('is_published', 'posted_to_linkedin')
    search_fields = ('title', 'description_en', 'description_ar')

@admin.action(description="Parse selected resumes")
def parse_resumes(modeladmin, request, queryset):
    for candidate in queryset:
        if candidate.resume:
            summary = extract_summary_from_pdf(candidate.resume.path)
            candidate.parsed_summary = str(summary)
            candidate.save()
    messages.success(request, f"Parsed {queryset.count()} resumes successfully.")

@admin.register(models.Candidate)
class CandidateAdmin(ModelAdmin):
    list_display = ('first_name','last_name','phone', 'email', 'job', 'applied', 'created_at')
    list_filter = ('applied', 'job')
    search_fields = ('name', 'email')
    # readonly_fields = ('parsed_summary',)
    actions = [parse_resumes]

@admin.register(models.TrainingMaterial)
class TrainingMaterialAdmin(ModelAdmin):
    list_display = ('title', 'created_by', 'created_at')
    search_fields = ('title', 'content')


class FormFieldInline(admin.TabularInline):
    model = FormField
    extra = 0
    fields = ('label', 'field_type', 'required', 'order', 'is_predefined')
    ordering = ('order',)

class FormStageInline(admin.TabularInline):
    model = FormStage
    extra = 0
    fields = ('name', 'order', 'is_predefined')
    ordering = ('order',)
    inlines = [FormFieldInline]

@admin.register(FormTemplate)
class FormTemplateAdmin(admin.ModelAdmin):
    list_display = ('name', 'created_by', 'created_at', 'is_active', 'get_stage_count')
    list_filter = ('is_active', 'created_at', 'created_by')
    search_fields = ('name', 'description', 'created_by__username')
    inlines = [FormStageInline]
    readonly_fields = ('created_at', 'updated_at')

    def get_stage_count(self, obj):
        return obj.get_stage_count()
    get_stage_count.short_description = 'Stages'

@admin.register(FormStage)
class FormStageAdmin(admin.ModelAdmin):
    list_display = ('name', 'template', 'order', 'is_predefined')
    list_filter = ('is_predefined', 'template')
    search_fields = ('name', 'template__name')
    ordering = ('template', 'order')

@admin.register(FormField)
class FormFieldAdmin(admin.ModelAdmin):
    list_display = ('label', 'field_type', 'stage', 'required', 'order', 'is_predefined')
    list_filter = ('field_type', 'required', 'is_predefined', 'stage__template')
    search_fields = ('label', 'stage__name', 'stage__template__name')
    ordering = ('stage', 'order')

@admin.register(FormSubmission)
class FormSubmissionAdmin(admin.ModelAdmin):
    list_display = ('template', 'applicant_name', 'applicant_email', 'submitted_at')
    list_filter = ('submitted_at', 'template')
    search_fields = ('applicant_name', 'applicant_email', 'template__name')
    readonly_fields = ('submitted_at',)

@admin.register(FieldResponse)
class FieldResponseAdmin(admin.ModelAdmin):
    list_display = ('field', 'submission', 'display_value')
    list_filter = ('field__field_type', 'submission__template')
    search_fields = ('field__label', 'submission__applicant_name')
    readonly_fields = ('display_value',)