from django.contrib import admin
from simple_history.admin import SimpleHistoryAdmin
from .models import (
    Computer,
    Monitor,
    Peripheral,
    DigitalCertificate,
    MaintenanceRecord,
    DecommissionRecord,
)


# --- Inlines for Computer ---
class MaintenanceInlineComputer(admin.TabularInline):
    model = MaintenanceRecord
    fk_name = "computer"
    extra = 0


class DecommissionInlineComputer(admin.StackedInline):
    model = DecommissionRecord
    fk_name = "computer"
    extra = 0
    max_num = 1


# --- Inlines for Monitor ---
class MaintenanceInlineMonitor(admin.TabularInline):
    model = MaintenanceRecord
    fk_name = "monitor"
    extra = 0


class DecommissionInlineMonitor(admin.StackedInline):
    model = DecommissionRecord
    fk_name = "monitor"
    extra = 0
    max_num = 1


# --- Inlines for Peripheral ---
class MaintenanceInlinePeripheral(admin.TabularInline):
    model = MaintenanceRecord
    fk_name = "peripheral"
    extra = 0


class DecommissionInlinePeripheral(admin.StackedInline):
    model = DecommissionRecord
    fk_name = "peripheral"
    extra = 0
    max_num = 1


@admin.register(Computer)
class ComputerAdmin(SimpleHistoryAdmin):
    list_display = ("equipment_code", "oem_name", "status", "assigned_to", "entry_date")
    list_filter = ("status", "entry_date", "assigned_to")
    search_fields = ("equipment_code", "oem_name", "mac_address", "observations")
    inlines = [MaintenanceInlineComputer, DecommissionInlineComputer]


@admin.register(Monitor)
class MonitorAdmin(SimpleHistoryAdmin):
    list_display = ("equipment_code", "name", "status", "assigned_to", "entry_date")
    list_filter = ("status", "entry_date", "assigned_to")
    search_fields = ("equipment_code", "name", "serial_number")
    inlines = [MaintenanceInlineMonitor, DecommissionInlineMonitor]


@admin.register(Peripheral)
class PeripheralAdmin(SimpleHistoryAdmin):
    list_display = (
        "equipment_code",
        "name",
        "peripheral_type",
        "status",
        "assigned_to",
    )
    list_filter = ("status", "peripheral_type", "entry_date", "assigned_to")
    search_fields = ("equipment_code", "name", "serial_number")
    inlines = [MaintenanceInlinePeripheral, DecommissionInlinePeripheral]


@admin.register(DigitalCertificate)
class DigitalCertificateAdmin(SimpleHistoryAdmin):
    list_display = (
        "get_certificate_type_display",
        "assigned_to",
        "issue_date",
        "expiration_date",
        "is_canceled",
    )
    list_filter = ("certificate_type", "is_canceled", "issue_date")
    search_fields = ("assigned_to__name", "assigned_to__username")


# Optionally register the records independently so they can be searched globally
@admin.register(MaintenanceRecord)
class MaintenanceRecordAdmin(SimpleHistoryAdmin):
    list_display = ("date", "operation_type", "performed_by")
    list_filter = ("date", "operation_type")
    search_fields = ("description", "performed_by")


@admin.register(DecommissionRecord)
class DecommissionRecordAdmin(SimpleHistoryAdmin):
    list_display = ("document_number", "date", "reason")
    list_filter = ("date",)
    search_fields = ("document_number", "reason")