using System;
using System.Collections.Generic;
using System.Text;

namespace paperless_ngx_export.Models
{
    public class DocumentParsed 
    {
        #region static arrays
        public static Tag[] _tags { get; set; } = new Tag[0];
        public static Correspondent[] _correspondents { get; set; } = new Correspondent[0];
        public static CustomField[] _customFields { get; set; } = new CustomField[0];
        public static DocumentType[] _documentTypes { get; set; } = new DocumentType[0];
        #endregion

        public string Correspondent { get; protected set; }
        public string DocumentType { get; protected set; } = "Unsorted";
        public string Title {  get; protected set; }
        public string Content { get; protected set; }
        public List<Tag> Tags { get; protected set; } = new List<Tag>();
        public DateTime Created { get; protected set; }
        public DateTimeOffset Modified { get; protected set; }
        public DateTimeOffset Added { get; protected set; }
        public DateTimeOffset? DeletedAt { get; protected set; }
        public List<string> Notes{ get; protected set; }=new List<string>();
        public string MIMEType { get; protected set; }
        public int? PageCount { get; protected set;  }
        public List<CustomFieldParsed> CustomFields { get; protected set; } = new List<CustomFieldParsed>();

        public override string ToString()
        {
            return $"{Correspondent} {DocumentType}";
        }

        public static DocumentParsed FromDocument(Document doc)
        {
            DocumentParsed d = new DocumentParsed();

            d.Correspondent = _correspondents.First(c => c.Id == doc.correspondent).name;
            d.DocumentType = _documentTypes.FirstOrDefault(dt => dt.Id == doc.document_type)?.name ?? "Unsorted";
            d.Title=doc.title.Trim();
            d.Content = doc.content.Trim();
            _tags.Where(_t=>doc.tags.Any(dt=>_t.Id == dt)).ToList().ForEach(t => d.Tags.Add(t));
            d.Created=doc.created; 
            d.Modified=doc.modified; 
            d.Added=doc.added;
            d.DeletedAt = doc.deleted_at;
            d.Notes = doc.notes.ToList(); ;
            d.MIMEType = doc.mime_type;
            d.PageCount = doc.page_count;
            _customFields.Where(_cf => doc.custom_fields.Any(dcf => _cf.Id == dcf.field)).ToList()
                .ForEach(cf =>
                {
                    var cfp = CustomFieldParsed.FromCustomFieldKeyValuePair(
                            doc.custom_fields.First(dcf => dcf.field == cf.Id),
                            _customFields);
                    if (!(cfp is null))
                    {
                        d.CustomFields.Add(cfp);
                    }
                });
            return d;
        }
    }
}