from django.contrib import admin
from django.contrib.auth.admin import UserAdmin

from .models import (
    AuditLog,
    InviteCode,
    InviteCodeUsage,
    User,
    UserSession,
    VisitorMigration,
)


@admin.register(User)
class HulumathUserAdmin(UserAdmin):
    fieldsets = UserAdmin.fieldsets + (
        ("葫芦数学", {"fields": ("nickname", "avatar_url", "bio", "track", "rating")}),
    )
    add_fieldsets = UserAdmin.add_fieldsets + (
        ("葫芦数学", {"fields": ("nickname", "track")}),
    )
    list_display = ("username", "nickname", "track", "rating", "is_active", "date_joined")
    list_filter = ("is_active", "is_staff", "track", "date_joined")
    search_fields = ("username", "nickname", "email")
    ordering = ("-date_joined",)


@admin.register(InviteCode)
class InviteCodeAdmin(admin.ModelAdmin):
    list_display = ("code", "group", "used_count", "max_uses", "expires_at", "is_active")
    list_filter = ("is_active", "group")
    search_fields = ("code", "group")
    readonly_fields = ("used_count", "created_at")
    ordering = ("-created_at",)


@admin.register(InviteCodeUsage)
class InviteCodeUsageAdmin(admin.ModelAdmin):
    list_display = ("invite_code", "user", "used_at", "ip_address")
    search_fields = ("invite_code__code", "user__username", "user__nickname")
    readonly_fields = ("invite_code", "user", "used_at", "ip_address")
    ordering = ("-used_at",)


@admin.register(UserSession)
class UserSessionAdmin(admin.ModelAdmin):
    list_display = ("user", "ip_address", "last_seen_at", "revoked_at")
    search_fields = ("user__username", "user__nickname", "ip_address")
    list_filter = ("revoked_at",)
    readonly_fields = ("user", "session_key", "user_agent", "ip_address", "last_seen_at")


@admin.register(VisitorMigration)
class VisitorMigrationAdmin(admin.ModelAdmin):
    list_display = ("user", "status", "created_at", "applied_at")
    list_filter = ("status",)
    search_fields = ("user__username", "user__nickname")
    readonly_fields = ("user", "payload", "summary", "created_at", "applied_at")


@admin.register(AuditLog)
class AuditLogAdmin(admin.ModelAdmin):
    list_display = ("action", "actor", "target_type", "target_id", "created_at")
    list_filter = ("action", "target_type")
    search_fields = ("actor__username", "action", "target_type", "target_id", "reason")
    readonly_fields = (
        "actor",
        "action",
        "target_type",
        "target_id",
        "reason",
        "metadata",
        "created_at",
    )
    ordering = ("-created_at",)