"""
PX Action Center admin
"""
from django.contrib import admin
from django.utils.html import format_html

from .models import PXAction, PXActionAttachment, PXActionLog, PXActionSLAConfig, RoutingRule


class PXActionLogInline(admin.TabularInline):
    """Inline admin for action logs"""
    model = PXActionLog
    extra = 1
    fields = ['log_type', 'message', 'created_by', 'created_at']
    readonly_fields = ['created_at']
    ordering = ['-created_at']


class PXActionAttachmentInline(admin.TabularInline):
    """Inline admin for action attachments"""
    model = PXActionAttachment
    extra = 0
    fields = ['file', 'filename', 'is_evidence', 'uploaded_by', 'description']
    readonly_fields = ['file_size']


@admin.register(PXAction)
class PXActionAdmin(admin.ModelAdmin):
    """PX Action admin"""
    list_display = [
        'title_preview', 'source_type', 'hospital', 'category',
        'severity_badge', 'status_badge', 'sla_indicator',
        'assigned_to', 'escalation_level', 'created_at'
    ]
    list_filter = [
        'status', 'source_type', 'severity', 'priority', 'category',
        'is_overdue', 'requires_approval', 'hospital', 'created_at'
    ]
    search_fields = ['title', 'description', 'metadata']
    ordering = ['-created_at']
    date_hierarchy = 'created_at'
    inlines = [PXActionLogInline, PXActionAttachmentInline]
    
    fieldsets = (
        ('Source', {
            'fields': ('source_type', 'content_type', 'object_id')
        }),
        ('Action Details', {
            'fields': ('title', 'description', 'category')
        }),
        ('Organization', {
            'fields': ('hospital', 'department')
        }),
        ('Classification', {
            'fields': ('priority', 'severity')
        }),
        ('Status & Assignment', {
            'fields': ('status', 'assigned_to', 'assigned_at')
        }),
        ('SLA Tracking', {
            'fields': ('due_at', 'is_overdue', 'reminder_sent_at', 'escalated_at', 'escalation_level')
        }),
        ('Approval', {
            'fields': ('requires_approval', 'approved_by', 'approved_at')
        }),
        ('Closure', {
            'fields': ('closed_at', 'closed_by')
        }),
        ('Action Plan & Outcome', {
            'fields': ('action_plan', 'outcome'),
            'classes': ('collapse',)
        }),
        ('Metadata', {
            'fields': ('metadata', 'created_at', 'updated_at'),
            'classes': ('collapse',)
        }),
    )
    
    readonly_fields = [
        'assigned_at', 'reminder_sent_at', 'escalated_at',
        'approved_at', 'closed_at',
        'created_at', 'updated_at'
    ]
    
    def get_queryset(self, request):
        qs = super().get_queryset(request)
        return qs.select_related(
            'hospital', 'department', 'assigned_to',
            'approved_by', 'closed_by', 'content_type'
        )
    
    def title_preview(self, obj):
        """Show preview of title"""
        return obj.title[:60] + '...' if len(obj.title) > 60 else obj.title
    title_preview.short_description = 'Title'
    
    def severity_badge(self, obj):
        """Display severity with color badge"""
        colors = {
            'low': 'info',
            'medium': 'warning',
            'high': 'danger',
            'critical': 'danger',
        }
        color = colors.get(obj.severity, 'secondary')
        return format_html(
            '<span class="badge bg-{}">{}</span>',
            color,
            obj.get_severity_display()
        )
    severity_badge.short_description = 'Severity'
    
    def status_badge(self, obj):
        """Display status with color badge"""
        colors = {
            'open': 'danger',
            'in_progress': 'warning',
            'pending_approval': 'info',
            'approved': 'success',
            'closed': 'success',
            'cancelled': 'secondary',
        }
        color = colors.get(obj.status, 'secondary')
        return format_html(
            '<span class="badge bg-{}">{}</span>',
            color,
            obj.get_status_display()
        )
    status_badge.short_description = 'Status'
    
    def sla_indicator(self, obj):
        """Display SLA status"""
        if obj.is_overdue:
            return format_html(
                '<span class="badge bg-danger">OVERDUE (Level {})</span>',
                obj.escalation_level
            )
        
        from django.utils import timezone
        time_remaining = obj.due_at - timezone.now()
        hours_remaining = time_remaining.total_seconds() / 3600
        
        if hours_remaining < 4:
            return format_html('<span class="badge bg-warning">DUE SOON</span>')
        else:
            return format_html('<span class="badge bg-success">ON TIME</span>')
    sla_indicator.short_description = 'SLA'


@admin.register(PXActionLog)
class PXActionLogAdmin(admin.ModelAdmin):
    """PX Action log admin"""
    list_display = ['action', 'log_type', 'message_preview', 'created_by', 'created_at']
    list_filter = ['log_type', 'created_at']
    search_fields = ['message', 'action__title']
    ordering = ['-created_at']
    
    fieldsets = (
        (None, {
            'fields': ('action', 'log_type', 'message')
        }),
        ('Status Change', {
            'fields': ('old_status', 'new_status'),
            'classes': ('collapse',)
        }),
        ('Details', {
            'fields': ('created_by', 'metadata')
        }),
        ('Metadata', {
            'fields': ('created_at', 'updated_at')
        }),
    )
    
    readonly_fields = ['created_at', 'updated_at']
    
    def get_queryset(self, request):
        qs = super().get_queryset(request)
        return qs.select_related('action', 'created_by')
    
    def message_preview(self, obj):
        """Show preview of message"""
        return obj.message[:100] + '...' if len(obj.message) > 100 else obj.message
    message_preview.short_description = 'Message'


@admin.register(PXActionAttachment)
class PXActionAttachmentAdmin(admin.ModelAdmin):
    """PX Action attachment admin"""
    list_display = ['action', 'filename', 'is_evidence', 'file_size', 'uploaded_by', 'created_at']
    list_filter = ['is_evidence', 'file_type', 'created_at']
    search_fields = ['filename', 'description', 'action__title']
    ordering = ['-created_at']
    
    fieldsets = (
        (None, {
            'fields': ('action', 'file', 'filename', 'file_type', 'file_size')
        }),
        ('Details', {
            'fields': ('is_evidence', 'uploaded_by', 'description')
        }),
        ('Metadata', {
            'fields': ('created_at', 'updated_at')
        }),
    )
    
    readonly_fields = ['file_size', 'created_at', 'updated_at']
    
    def get_queryset(self, request):
        qs = super().get_queryset(request)
        return qs.select_related('action', 'uploaded_by')


@admin.register(PXActionSLAConfig)
class PXActionSLAConfigAdmin(admin.ModelAdmin):
    """PX Action SLA configuration admin"""
    list_display = [
        'name', 'hospital', 'department',
        'critical_hours', 'high_hours', 'medium_hours', 'low_hours',
        'auto_escalate', 'is_active'
    ]
    list_filter = ['is_active', 'auto_escalate', 'hospital']
    search_fields = ['name']
    ordering = ['hospital', 'name']
    
    fieldsets = (
        (None, {
            'fields': ('name', 'hospital', 'department')
        }),
        ('SLA Durations (hours)', {
            'fields': ('critical_hours', 'high_hours', 'medium_hours', 'low_hours')
        }),
        ('Reminder Configuration', {
            'fields': ('reminder_hours_before',)
        }),
        ('Escalation Configuration', {
            'fields': ('auto_escalate', 'escalation_delay_hours')
        }),
        ('Status', {
            'fields': ('is_active',)
        }),
        ('Metadata', {
            'fields': ('created_at', 'updated_at')
        }),
    )
    
    readonly_fields = ['created_at', 'updated_at']
    
    def get_queryset(self, request):
        qs = super().get_queryset(request)
        return qs.select_related('hospital', 'department')


@admin.register(RoutingRule)
class RoutingRuleAdmin(admin.ModelAdmin):
    """Routing rule admin"""
    list_display = [
        'name', 'source_type', 'category', 'severity',
        'hospital', 'assign_to_role', 'priority', 'is_active'
    ]
    list_filter = ['source_type', 'severity', 'is_active', 'hospital']
    search_fields = ['name', 'description']
    ordering = ['-priority', 'name']
    
    fieldsets = (
        (None, {
            'fields': ('name', 'description', 'priority')
        }),
        ('Conditions', {
            'fields': ('source_type', 'category', 'severity', 'hospital', 'department')
        }),
        ('Routing Target', {
            'fields': ('assign_to_role', 'assign_to_user', 'assign_to_department')
        }),
        ('Status', {
            'fields': ('is_active',)
        }),
        ('Metadata', {
            'fields': ('created_at', 'updated_at')
        }),
    )
    
    readonly_fields = ['created_at', 'updated_at']
    
    def get_queryset(self, request):
        qs = super().get_queryset(request)
        return qs.select_related('hospital', 'department', 'assign_to_user', 'assign_to_department')