from __future__ import annotations

from django.contrib import admin

from .models import BackupRun, GlobalConfig, HostConfig, ScheduleConfig, SnapshotRecord


@admin.register(GlobalConfig)
class GlobalConfigAdmin(admin.ModelAdmin):
    list_display = ("name", "backup_root", "ssh_user", "ssh_port", "updated_at")
    readonly_fields = ("created_at", "updated_at")
    fieldsets = (
        (None, {"fields": ("name", "backup_root", "pobsync_home")}),
        ("SSH", {"fields": ("ssh_user", "ssh_port", "ssh_options")}),
        (
            "Rsync",
            {
                "fields": (
                    "rsync_binary",
                    "rsync_args",
                    "rsync_extra_args",
                    "rsync_timeout_seconds",
                    "rsync_bwlimit_kbps",
                )
            },
        ),
        ("Defaults", {"fields": ("default_source_root", "default_destination_subdir", "excludes_default")}),
        ("Retention defaults", {"fields": ("retention_daily", "retention_weekly", "retention_monthly", "retention_yearly")}),
        ("Legacy JSON", {"fields": ("data",), "classes": ("collapse",)}),
        ("Timestamps", {"fields": ("created_at", "updated_at"), "classes": ("collapse",)}),
    )


@admin.register(HostConfig)
class HostConfigAdmin(admin.ModelAdmin):
    list_display = ("host", "address", "enabled", "updated_at")
    list_filter = ("enabled",)
    search_fields = ("host", "address")
    readonly_fields = ("created_at", "updated_at")
    fieldsets = (
        (None, {"fields": ("host", "address", "enabled")}),
        ("SSH override", {"fields": ("ssh_user", "ssh_port")}),
        ("Source", {"fields": ("source_root", "includes", "excludes_add", "excludes_replace")}),
        ("Rsync override", {"fields": ("rsync_extra_args",)}),
        ("Retention", {"fields": ("retention_daily", "retention_weekly", "retention_monthly", "retention_yearly")}),
        ("Legacy JSON", {"fields": ("config",), "classes": ("collapse",)}),
        ("Timestamps", {"fields": ("created_at", "updated_at"), "classes": ("collapse",)}),
    )


@admin.register(BackupRun)
class BackupRunAdmin(admin.ModelAdmin):
    list_display = ("host", "run_type", "status", "started_at", "ended_at", "snapshot")
    list_filter = ("run_type", "status", "started_at")
    search_fields = ("host__host", "snapshot_path", "snapshot__dirname", "snapshot__path")
    autocomplete_fields = ("snapshot",)


@admin.register(SnapshotRecord)
class SnapshotRecordAdmin(admin.ModelAdmin):
    list_display = ("host", "kind", "dirname", "status", "started_at", "discovered_at")
    list_filter = ("kind", "status", "started_at", "discovered_at")
    search_fields = ("host__host", "dirname", "path")
    readonly_fields = ("discovered_at",)


@admin.register(ScheduleConfig)
class ScheduleConfigAdmin(admin.ModelAdmin):
    list_display = ("host", "cron_expr", "enabled", "prune", "last_status", "last_started_at", "updated_at")
    list_filter = ("enabled", "prune", "last_status")
    search_fields = ("host__host", "cron_expr")