from django.contrib import admin
from django.utils.html import format_html
from unfold.admin import ModelAdmin
from unfold.decorators import display
from .models import Competition, CompetitionEnrollment, ScoreDimension, Project, ProjectFile, Score, Comment, HomePageConfig


@admin.register(HomePageConfig)
class HomePageConfigAdmin(ModelAdmin):
    list_display = ['id', 'main_title', 'organizer', 'undertaker', 'is_active', 'banner_preview']
    list_editable = ['main_title', 'organizer', 'undertaker', 'is_active']
    readonly_fields = ['banner_preview']
    fieldsets = (
        ('封面图', {
            'fields': ('banner_image', 'banner_image_url', 'banner_preview'),
            'description': '首页标题下方的封面图，可上传本地图片或填写URL，优先使用上传的图片'
        }),
        ('标题设置', {
            'fields': ('main_title',)
        }),
        ('主办单位', {
            'fields': ('organizer', 'undertaker')
        }),
        ('状态', {
            'fields': ('is_active',)
        }),
    )

    @display(description="封面图预览")
    def banner_preview(self, obj):
        url = None
        if obj.banner_image and obj.banner_image.name:
            from django.conf import settings
            url = settings.MEDIA_URL + obj.banner_image.name
        elif obj.banner_image_url:
            url = obj.banner_image_url
        if url:
            return format_html('<img src="{}" style="max-height:120px;max-width:300px;border-radius:6px;object-fit:cover;" />', url)
        return "暂无图片"


class ScoreDimensionInline(admin.TabularInline):
    model = ScoreDimension
    extra = 1
    tab = True
    fields = ('name', 'description', 'weight', 'max_score', 'is_public', 'is_peer_review', 'order')

class ProjectFileInline(admin.TabularInline):
    model = ProjectFile
    extra = 0
    tab = True

@admin.register(Competition)
class CompetitionAdmin(ModelAdmin):
    list_display = ['title', 'status', 'allow_contestant_grading', 'start_time', 'end_time', 'is_active', 'created_at']
    list_filter = ['status', 'allow_contestant_grading', 'is_active']
    search_fields = ['title', 'description']
    inlines = [ScoreDimensionInline]
    
    fieldsets = (
        ('基本信息', {
            'fields': ('title', 'description', 'rule_description', 'condition_description')
        }),
        ('封面设置', {
            'fields': ('cover_image', 'cover_image_url'),
            'description': '封面图可以上传本地图片，也可以填写外部链接，优先显示本地上传的图片'
        }),
        ('时间和状态', {
            'fields': ('start_time', 'end_time', 'status', 'project_visibility', 'allow_contestant_grading', 'is_active')
        }),
    )
    
    actions = ['make_published', 'make_ended']

    def make_published(self, request, queryset):
        queryset.update(status='published')
    make_published.short_description = "发布选中比赛"

    def make_ended(self, request, queryset):
        queryset.update(status='ended')
    make_ended.short_description = "结束选中比赛"

@admin.register(CompetitionEnrollment)
class CompetitionEnrollmentAdmin(ModelAdmin):
    list_display = ['competition', 'user_info_display', 'role', 'status', 'created_at']
    list_filter = ['competition', 'role', 'status']
    search_fields = ['user__nickname', 'user__phone_number', 'competition__title']
    autocomplete_fields = ['user', 'competition']
    actions = ['approve_enrollment', 'reject_enrollment']

    @display(description="报名用户 (手机号/昵称)")
    def user_info_display(self, obj):
        if not obj.user:
            return "-"
        phone = obj.user.phone_number or "无手机号"
        nickname = obj.user.nickname or "无昵称"
        return f"{phone} ({nickname})"

    def approve_enrollment(self, request, queryset):
        queryset.update(status='approved')
    approve_enrollment.short_description = "通过审核"

    def reject_enrollment(self, request, queryset):
        queryset.update(status='rejected')
    reject_enrollment.short_description = "拒绝申请"

@admin.register(Project)
class ProjectAdmin(ModelAdmin):
    list_display = ['id', 'title', 'competition', 'contestant_info_display', 'status', 'final_score', 'created_at']
    list_filter = ['competition', 'status']
    search_fields = ['id', 'title', 'contestant__user__nickname', 'contestant__user__phone_number']
    autocomplete_fields = ['competition', 'contestant']
    inlines = [ProjectFileInline]
    readonly_fields = ['id', 'final_score']
    
    fieldsets = (
        ('基本信息', {
            'fields': ('competition', 'contestant', 'title', 'description', 'team_info')
        }),
        ('封面设置', {
            'fields': ('cover_image', 'cover_image_url'),
            'description': '封面图可以上传本地图片，也可以填写外部链接，优先显示本地上传的图片'
        }),
        ('状态和得分', {
            'fields': ('status', 'final_score')
        }),
    )

    @display(description="参赛人员 (手机号/昵称)")
    def contestant_info_display(self, obj):
        if not obj.contestant or not obj.contestant.user:
            return "-"
        user = obj.contestant.user
        phone = user.phone_number or "无手机号"
        nickname = user.nickname or "无昵称"
        return f"{phone} ({nickname})"

@admin.register(Score)
class ScoreAdmin(ModelAdmin):
    list_display = ['project', 'judge_info_display', 'dimension', 'score', 'created_at']
    list_filter = ['project__competition', 'dimension']
    search_fields = ['project__title', 'judge__user__nickname', 'judge__user__phone_number']
    autocomplete_fields = ['project', 'judge']

    @display(description="评委 (手机号/昵称)")
    def judge_info_display(self, obj):
        if not obj.judge or not obj.judge.user:
            return "-"
        user = obj.judge.user
        phone = user.phone_number or "无手机号"
        nickname = user.nickname or "无昵称"
        return f"{phone} ({nickname})"

@admin.register(Comment)
class CommentAdmin(ModelAdmin):
    list_display = ['project', 'judge_info_display', 'content_preview', 'created_at']
    list_filter = ['project__competition']
    search_fields = ['project__title', 'judge__user__nickname', 'judge__user__phone_number', 'content']
    autocomplete_fields = ['project', 'judge']

    @display(description="评委 (手机号/昵称)")
    def judge_info_display(self, obj):
        if not obj.judge or not obj.judge.user:
            return "-"
        user = obj.judge.user
        phone = user.phone_number or "无手机号"
        nickname = user.nickname or "无昵称"
        return f"{phone} ({nickname})"

    def content_preview(self, obj):
        return obj.content[:50] + '...' if len(obj.content) > 50 else obj.content
    content_preview.short_description = "评语内容"