using System;
using System.Collections.Generic;

namespace FrameworkDAL.DTO.EIPConversation
{
    /// <summary>
    /// MessageHub Template DTO
    /// Used for WhatsApp / Telegram / Teams template-based messaging
    /// </summary>
    public class MessageHubTemplateDTO
    {
        /// <summary>
        /// Destination number / channel / chat id
        /// </summary>
        public string Recipient { get; set; }

        /// <summary>
        /// WhatsApp approved template name (Meta)
        /// </summary>
        public string TemplateName { get; set; }

        /// <summary>
        /// Optional: Language code (ex: en_US)
        /// </summary>
        public string LanguageCode { get; set; }
        public List<string>? TemplateKeys { get; set; }
        /// <summary>
        /// Optional: List of buttons for WhatsApp template
        /// </summary>
        public List<TemplateButtonDTO> Buttons { get; set; } = new List<TemplateButtonDTO>();

        /// <summary>
        /// Template parameters (Meta format compatible)
        /// </summary>
        public List<TemplateComponentDTO> TemplateComponents { get; set; } = new List<TemplateComponentDTO>();

        /// <summary>
        /// Optional tracking reference
        /// </summary>
        public string ReferenceId { get; set; }

        // ---------------------------
        // NEW: For Celtix plain text messages
        // ---------------------------
        /// <summary>
        /// The full template text with placeholders (##Param##)
        /// </summary>
        public string TemplateText { get; set; }

        /// <summary>
        /// Key-value mapping of parameters to replace in TemplateText
        /// Example: { "EmployeeName": "John", "TicketNo": "12345" }
        /// </summary>
        public Dictionary<string, object> Parameters { get; set; } = new Dictionary<string, object>();
        public string? HeaderText { get; set; }
        public object ButtonParams { get; set; }
    }

    /// <summary>
    /// Template component (header / body / button etc)
    /// Meta API compatible structure
    /// </summary>
    public class TemplateComponentDTO
    {
        /// <summary>
        /// header / body / button
        /// </summary>
        public string Type { get; set; }

        /// <summary>
        /// List of parameters for the component
        /// </summary>
        public List<TemplateParameterDTO> Parameters { get; set; } = new List<TemplateParameterDTO>();
    }

    /// <summary>
    /// Individual parameter inside template
    /// </summary>
    public class TemplateParameterDTO
    {
        /// <summary>
        /// text / currency / date_time / image etc
        /// </summary>
        public string Type { get; set; }
        public string Value { get; set; }

        /// <summary>
        /// Used when Type = text
        /// </summary>
        public string Text { get; set; }

        /// <summary>
        /// Used when Type = currency
        /// </summary>
        public TemplateCurrencyDTO Currency { get; set; }

        /// <summary>
        /// Used when Type = date_time
        /// </summary>
        public TemplateDateTimeDTO DateTime { get; set; }
    }

    public class TemplateCurrencyDTO
    {
        public string FallbackValue { get; set; }
        public string Code { get; set; }
        public decimal Amount_1000 { get; set; }
    }

    public class TemplateDateTimeDTO
    {
        public string FallbackValue { get; set; }
    }

    /// <summary>
    /// Button DTO for WhatsApp / Meta templates
    /// </summary>
    public class TemplateButtonDTO
    {
        /// <summary>
        /// Unique button identifier (used as payload)
        /// </summary>
        public string Id { get; set; }

        /// <summary>
        /// Text displayed on the button
        /// </summary>
        public string Title { get; set; }
    }
}