from rest_framework import serializers


class FertilizationFarmDataSerializer(serializers.Serializer):
    soilType = serializers.CharField(required=False, allow_blank=True)
    organicMatter = serializers.CharField(required=False, allow_blank=True)
    waterEC = serializers.CharField(required=False, allow_blank=True)


class FertilizationRecommendRequestSerializer(serializers.Serializer):
    farm_uuid = serializers.UUIDField(required=True, help_text="UUID مزرعه برای دریافت توصیه کودی.")
    crop_id = serializers.CharField(required=False, allow_blank=True, help_text="شناسه یا نام محصول. این فیلد همان plant_name است.")
    plant_name = serializers.CharField(required=False, allow_blank=True, help_text="نام محصول یا گیاه. این فیلد همان crop_id است.")
    growth_stage = serializers.CharField(required=False, allow_blank=True, help_text="مرحله رشد گیاه.")


class FertilizationRecommendationListQuerySerializer(serializers.Serializer):
    farm_uuid = serializers.UUIDField(required=True, help_text="UUID مزرعه برای دریافت لیست توصیه های کودی.")
    page = serializers.IntegerField(required=False, min_value=1)
    page_size = serializers.IntegerField(required=False, min_value=1, max_value=100)


class FertilizationSectionSerializer(serializers.Serializer):
    type = serializers.ChoiceField(choices=["text", "list", "recommendation", "warning"])
    title = serializers.CharField(required=False, allow_blank=True)
    icon = serializers.CharField(required=False, allow_blank=True)
    content = serializers.CharField(required=False, allow_blank=True)
    items = serializers.ListField(child=serializers.CharField(), required=False)
    fertilizerType = serializers.CharField(required=False, allow_blank=True)
    amount = serializers.CharField(required=False, allow_blank=True)
    applicationMethod = serializers.CharField(required=False, allow_blank=True)
    timing = serializers.CharField(required=False, allow_blank=True)
    validityPeriod = serializers.CharField(required=False, allow_blank=True)
    expandableExplanation = serializers.CharField(required=False, allow_blank=True)


class NpkRatioSerializer(serializers.Serializer):
    n = serializers.FloatField(required=False)
    p = serializers.FloatField(required=False)
    k = serializers.FloatField(required=False)
    label = serializers.CharField(required=False, allow_blank=True)


class ApplicationMethodSerializer(serializers.Serializer):
    id = serializers.CharField(required=False, allow_blank=True)
    label = serializers.CharField(required=False, allow_blank=True)


class ApplicationIntervalSerializer(serializers.Serializer):
    value = serializers.FloatField(required=False)
    unit = serializers.CharField(required=False, allow_blank=True)
    label = serializers.CharField(required=False, allow_blank=True)


class DosageSerializer(serializers.Serializer):
    base_amount_per_hectare = serializers.FloatField(required=False)
    base_amount_per_square_meter = serializers.FloatField(required=False)
    unit = serializers.CharField(required=False, allow_blank=True)
    label = serializers.CharField(required=False, allow_blank=True)
    calculation_basis = serializers.CharField(required=False, allow_blank=True)


class PrimaryRecommendationSerializer(serializers.Serializer):
    fertilizer_code = serializers.CharField(required=False, allow_blank=True)
    fertilizer_name = serializers.CharField(required=False, allow_blank=True)
    display_title = serializers.CharField(required=False, allow_blank=True)
    fertilizer_type = serializers.CharField(required=False, allow_blank=True)
    npk_ratio = NpkRatioSerializer(required=False)
    application_method = ApplicationMethodSerializer(required=False)
    application_interval = ApplicationIntervalSerializer(required=False)
    dosage = DosageSerializer(required=False)
    reasoning = serializers.CharField(required=False, allow_blank=True)
    summary = serializers.CharField(required=False, allow_blank=True)


class NutrientItemSerializer(serializers.Serializer):
    key = serializers.CharField(required=False, allow_blank=True)
    name = serializers.CharField(required=False, allow_blank=True)
    value = serializers.FloatField(required=False)
    unit = serializers.CharField(required=False, allow_blank=True)
    description = serializers.CharField(required=False, allow_blank=True)


class NutrientAnalysisSerializer(serializers.Serializer):
    macro = NutrientItemSerializer(many=True, read_only=True)
    micro = NutrientItemSerializer(many=True, read_only=True)


class ApplicationGuideStepSerializer(serializers.Serializer):
    step_number = serializers.IntegerField(required=False)
    title = serializers.CharField(required=False, allow_blank=True)
    description = serializers.CharField(required=False, allow_blank=True)


class ApplicationGuideSerializer(serializers.Serializer):
    safety_warning = serializers.CharField(required=False, allow_blank=True)
    steps = ApplicationGuideStepSerializer(many=True, read_only=True)


class AlternativeRecommendationSerializer(serializers.Serializer):
    fertilizer_code = serializers.CharField(required=False, allow_blank=True)
    fertilizer_name = serializers.CharField(required=False, allow_blank=True)
    fertilizer_type = serializers.CharField(required=False, allow_blank=True)
    usage_method = serializers.CharField(required=False, allow_blank=True)
    description = serializers.CharField(required=False, allow_blank=True)


class FertilizationRecommendationListItemSerializer(serializers.Serializer):
    recommendation_uuid = serializers.UUIDField(source="uuid", read_only=True)
    crop_id = serializers.CharField(read_only=True)
    plant_name = serializers.CharField(source="crop_id", read_only=True)
    growth_stage = serializers.CharField(read_only=True)
    fertilizer_type = serializers.CharField(read_only=True, allow_blank=True)
    status = serializers.CharField(read_only=True)
    status_label = serializers.CharField(source="get_status_display", read_only=True)
    requested_at = serializers.DateTimeField(source="created_at", read_only=True)


class FreeTextPlanParserRequestSerializer(serializers.Serializer):
    message = serializers.CharField(required=False, allow_blank=True, help_text="متن آزاد کاربر.")
    answers = serializers.DictField(required=False, help_text="پاسخ های تکمیلی کاربر.")
    partial_plan = serializers.DictField(required=False, help_text="داده استخراج شده از مرحله قبل.")
    farm_uuid = serializers.UUIDField(
        required=False,
        allow_null=True,
        initial="11111111-1111-1111-1111-111111111111",
        help_text="UUID مزرعه برای context اختیاری.",
    )

    def validate(self, attrs):
        has_message = bool((attrs.get("message") or "").strip())
        has_answers = isinstance(attrs.get("answers"), dict) and bool(attrs.get("answers"))
        has_partial_plan = isinstance(attrs.get("partial_plan"), dict) and bool(attrs.get("partial_plan"))
        if not (has_message or has_answers or has_partial_plan):
            raise serializers.ValidationError(
                {"non_field_errors": ["حداقل یکی از message، answers یا partial_plan باید ارسال شود."]}
            )
        return attrs


class PlanParserQuestionSerializer(serializers.Serializer):
    id = serializers.CharField(required=False, allow_blank=True)
    field = serializers.CharField(required=False, allow_blank=True)
    question = serializers.CharField(required=False, allow_blank=True)
    rationale = serializers.CharField(required=False, allow_blank=True)


class FreeTextPlanParserResponseDataSerializer(serializers.Serializer):
    status = serializers.CharField(required=False, allow_blank=True)
    status_fa = serializers.CharField(required=False, allow_blank=True)
    summary = serializers.CharField(required=False, allow_blank=True)
    missing_fields = serializers.ListField(child=serializers.CharField(), required=False)
    questions = PlanParserQuestionSerializer(many=True, required=False)
    collected_data = serializers.DictField(required=False)
    final_plan = serializers.DictField(required=False, allow_null=True)


class FertilizationRecommendResponseDataSerializer(serializers.Serializer):
    recommendation_uuid = serializers.UUIDField(read_only=True, required=False)
    crop_id = serializers.CharField(read_only=True, required=False, allow_blank=True)
    plant_name = serializers.CharField(read_only=True, required=False, allow_blank=True)
    growth_stage = serializers.CharField(read_only=True, required=False, allow_blank=True)
    status = serializers.CharField(read_only=True, required=False)
    status_label = serializers.CharField(read_only=True, required=False)
    primary_recommendation = PrimaryRecommendationSerializer(read_only=True)
    nutrient_analysis = NutrientAnalysisSerializer(read_only=True)
    application_guide = ApplicationGuideSerializer(read_only=True)
    alternative_recommendations = AlternativeRecommendationSerializer(many=True, read_only=True)
    sections = FertilizationSectionSerializer(many=True, read_only=True)


class FertilizationPlanListQuerySerializer(serializers.Serializer):
    farm_uuid = serializers.UUIDField(required=True, help_text="UUID مزرعه برای دریافت لیست برنامه های کودی.")
    page = serializers.IntegerField(required=False, min_value=1)
    page_size = serializers.IntegerField(required=False, min_value=1, max_value=100)


class FertilizationPlanListItemSerializer(serializers.Serializer):
    plan_uuid = serializers.UUIDField(source="uuid", read_only=True)
    source = serializers.CharField(read_only=True)
    source_label = serializers.CharField(source="get_source_display", read_only=True)
    title = serializers.CharField(read_only=True)
    crop_id = serializers.CharField(read_only=True)
    plant_name = serializers.CharField(source="crop_id", read_only=True)
    growth_stage = serializers.CharField(read_only=True)
    is_active = serializers.BooleanField(read_only=True)
    created_at = serializers.DateTimeField(read_only=True)


class FertilizationPlanDetailSerializer(serializers.Serializer):
    plan_uuid = serializers.UUIDField(source="uuid", read_only=True)
    source = serializers.CharField(read_only=True)
    source_label = serializers.CharField(source="get_source_display", read_only=True)
    title = serializers.CharField(read_only=True)
    crop_id = serializers.CharField(read_only=True)
    plant_name = serializers.CharField(source="crop_id", read_only=True)
    growth_stage = serializers.CharField(read_only=True)
    is_active = serializers.BooleanField(read_only=True)
    created_at = serializers.DateTimeField(read_only=True)
    updated_at = serializers.DateTimeField(read_only=True)
    plan_payload = serializers.DictField(read_only=True)


class FertilizationPlanStatusUpdateSerializer(serializers.Serializer):
    is_active = serializers.BooleanField(required=True)