using ManagerService.DTOs;
using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;

namespace ManagerService.Data
{
    /// <summary>
    /// Instance Information
    /// </summary>
    public class Instance : IAuditableEntity
    {
        [Key]
        [Required]
        public string Id { get; set; }

        [Required]
        public string Name { get; set; } // UNIQUE !..

        public DateTime DateCreation { get; set; }

        public DateTime DateUpdate { get; set; }

        public string PinCode { get; set; }

        public bool IsPushNotification { get; set; }

        public bool IsMobile { get; set; }

        public bool IsTablet { get; set; }

        public bool IsWeb { get; set; }

        public bool IsVR { get; set; }

        public bool IsAssistant { get; set; }

        /// <summary>
        /// Appose le filigrane du lieu sur les images téléversées. Remplace le
        /// `instanceId == "633ee379…"` en dur de ResourceController.Create.
        /// </summary>
        public bool IsImageWatermark { get; set; }

        /// <summary>Nom du guide affiché au visiteur, libre. Ex: "Léon".</summary>
        public string? GuideName { get; set; }

        /// <summary>
        /// Personnalité du guide : instruction envoyée au modèle, jamais affichée.
        /// Écrite dans une seule langue — le modèle répond dans celle du visiteur.
        /// </summary>
        public string? GuidePersonaPrompt { get; set; }

        /// <summary>Voix Gemini TTS : "Sulafat" (Viva, féminine) ou "Umbriel" (Marco, masculine).</summary>
        public string? GuideVoiceId { get; set; }

        /// <summary>
        /// Formulations utilisées quand le guide ne trouve pas de réponse.
        /// Liste à plat : plusieurs entrées peuvent partager la même langue,
        /// une est tirée au hasard parmi celles de la langue du visiteur.
        /// </summary>
        public List<TranslationDTO>? GuideFallbackMessages { get; set; }

        public string? WebSlug { get; set; }

        public string? PublicApiKey { get; set; }

        public string? SubscriptionPlanId { get; set; }

        [ForeignKey("SubscriptionPlanId")]
        public SubscriptionPlan? SubscriptionPlan { get; set; }

        public long AiTokensThisMonth { get; set; } = 0;

        public string AiUsageMonthKey { get; set; } = "";

        public long StorageQuotaBytes { get; set; } = 0;

        public long AiTokensPerMonth { get; set; } = 0;

        public bool HasStats { get; set; } = false;

        public int StatsHistoryDays { get; set; } = 30;

        public bool HasAdvancedStats { get; set; } = false;

        public bool IsActive { get; set; } = true;

        public bool IsTrialActive { get; set; } = false;

        public DateTime? TrialEndsAt { get; set; }

        public long TrialAiTokensUsed { get; set; } = 0;

        public bool TrialCheckInEmailSent { get; set; } = false;

        public bool TrialReminderEmailSent { get; set; } = false;

        public bool TrialLastDayEmailSent { get; set; } = false;

        public string? BillingAddress { get; set; }

        public string? BillingCountry { get; set; }

        public string? VatNumber { get; set; }

        public decimal? VatRate { get; set; }

        public string? StripeCustomerId { get; set; }

        public string? StripeSubscriptionId { get; set; }

        public InstanceDTO ToDTO(List<ApplicationInstanceDTO> applicationInstanceDTOs)
        {
            return new InstanceDTO()
            {
                id = Id,
                name = Name,
                dateCreation = DateCreation,
                pinCode = PinCode,
                isPushNotification = IsPushNotification,
                isMobile = IsMobile,
                isTablet = IsTablet,
                isWeb = IsWeb,
                isVR = IsVR,
                isAssistant = IsAssistant,
                isImageWatermark = IsImageWatermark,
                guideName = GuideName,
                guidePersonaPrompt = GuidePersonaPrompt,
                guideVoiceId = GuideVoiceId,
                guideFallbackMessages = GuideFallbackMessages,
                webSlug = WebSlug,
                publicApiKey = PublicApiKey,
                subscriptionPlanId = SubscriptionPlanId,
                subscriptionPlan = SubscriptionPlan?.ToDTO(),
                aiTokensThisMonth = AiTokensThisMonth,
                aiUsageMonthKey = AiUsageMonthKey,
                storageQuotaBytes = StorageQuotaBytes,
                aiTokensPerMonth = AiTokensPerMonth,
                hasStats = HasStats,
                statsHistoryDays = StatsHistoryDays,
                hasAdvancedStats = HasAdvancedStats,
                isTrialActive = IsTrialActive,
                trialEndsAt = TrialEndsAt,
                trialAiTokensUsed = TrialAiTokensUsed,
                billingAddress = BillingAddress,
                billingCountry = BillingCountry,
                vatNumber = VatNumber,
                vatRate = VatRate,
                applicationInstanceDTOs = applicationInstanceDTOs
            };
        }

        public Instance FromDTO(InstanceDTO instanceDTO)
        {
            Name = instanceDTO.name;
            DateCreation = instanceDTO.dateCreation != null ? instanceDTO.dateCreation.Value : DateTime.Now.ToUniversalTime();
            PinCode = instanceDTO.pinCode;
            IsPushNotification = instanceDTO.isPushNotification ?? false;
            IsMobile = instanceDTO.isMobile ?? false;
            IsTablet = instanceDTO.isTablet ?? false;
            IsWeb = instanceDTO.isWeb ?? false;
            IsVR = instanceDTO.isVR ?? false;
            IsAssistant = instanceDTO.isAssistant ?? false;
            IsImageWatermark = instanceDTO.isImageWatermark ?? false;
            if (instanceDTO.guideName != null)
                GuideName = instanceDTO.guideName;
            if (instanceDTO.guidePersonaPrompt != null)
                GuidePersonaPrompt = instanceDTO.guidePersonaPrompt;
            if (instanceDTO.guideVoiceId != null)
                GuideVoiceId = instanceDTO.guideVoiceId;
            if (instanceDTO.guideFallbackMessages != null)
                GuideFallbackMessages = instanceDTO.guideFallbackMessages;
            if (instanceDTO.webSlug != null)
                WebSlug = instanceDTO.webSlug;
            if (instanceDTO.publicApiKey != null)
                PublicApiKey = instanceDTO.publicApiKey;
            if (instanceDTO.subscriptionPlanId != null)
                SubscriptionPlanId = instanceDTO.subscriptionPlanId;
            if (instanceDTO.storageQuotaBytes.HasValue)
                StorageQuotaBytes = instanceDTO.storageQuotaBytes.Value;
            if (instanceDTO.aiTokensPerMonth.HasValue)
                AiTokensPerMonth = instanceDTO.aiTokensPerMonth.Value;
            if (instanceDTO.hasStats.HasValue)
                HasStats = instanceDTO.hasStats.Value;
            if (instanceDTO.statsHistoryDays.HasValue)
                StatsHistoryDays = instanceDTO.statsHistoryDays.Value;
            if (instanceDTO.hasAdvancedStats.HasValue)
                HasAdvancedStats = instanceDTO.hasAdvancedStats.Value;
            if (instanceDTO.billingAddress != null)
                BillingAddress = instanceDTO.billingAddress;
            if (instanceDTO.billingCountry != null)
                BillingCountry = instanceDTO.billingCountry;
            if (instanceDTO.vatNumber != null)
                VatNumber = instanceDTO.vatNumber;
            if (instanceDTO.vatRate.HasValue)
                VatRate = instanceDTO.vatRate.Value;
            return this;
        }

    }
}