using Elwig.Helpers;
using Elwig.Models.Dtos;
using Elwig.Models.Entities;
using iText.Kernel.Pdf;
using iText.Layout.Borders;
using iText.Layout.Element;
using iText.Layout.Properties;
using System;
using System.Collections.Generic;
using System.Linq;

namespace Elwig.Documents {
    public class DeliveryConfirmation : BusinessDocument {

        public new static string Name => "Anlieferungsbestätigung";

        public Season Season;
        public DeliveryConfirmationDeliveryData Data;
        public string? Text = App.Client.TextDeliveryConfirmation;
        public Dictionary<string, MemberBucket> MemberBuckets;
        public List<MemberStat> MemberStats;

        public DeliveryConfirmation(AppDbContext ctx, int year, Member m, DeliveryConfirmationDeliveryData data) :
            base($"{Name} {year}", m) {
            Season = ctx.Seasons.Find(year) ?? throw new ArgumentException("invalid season");
            ShowDateAndLocation = true;
            UseBillingAddress = true;
            DocumentId = $"Anl.-Best. {Season.Year}/{m.MgNr}";
            Data = data;
            MemberBuckets = ctx.GetMemberBuckets(Season.Year, m.MgNr).GetAwaiter().GetResult();
            MemberStats = AppDbContext.GetMemberStats(Season.Year, m.MgNr).GetAwaiter().GetResult();
        }

        protected override void RenderHeader(iText.Layout.Document doc, PdfDocument pdf) {
            base.RenderHeader(doc, pdf);
            var firstDay = Data.Rows.MinBy(r => r.Date)?.Date;
            var lastDay = Data.Rows.MaxBy(r => r.Date)?.Date;
            Aside?.AddCell(NewAsideCell("Saison", 2))
                .AddCell(NewAsideCell("Lieferungen:", isName: true)).AddCell(NewAsideCell($"{Data.Rows.DistinctBy(r => r.LsNr).Count():N0} (Teil-Lfrg.: {Data.RowNum:N0})"))
                .AddCell(NewAsideCell("Zeitraum:", isName: true)).AddCell(NewAsideCell(firstDay == null || lastDay == null ? "-" : firstDay == lastDay ? $"{firstDay:dd.MM.} (1 Tag)" : $"{firstDay:dd.MM.}\u2013{lastDay:dd.MM.} ({lastDay?.DayNumber - firstDay?.DayNumber + 1:N0} Tage)"))
                .AddCell(NewAsideCell("Menge:", isName: true)).AddCell(NewAsideCell($"{MemberStats.Sum(s => s.Weight):N0} kg"));
        }

        protected override void RenderBody(iText.Layout.Document doc, PdfDocument pdf) {
            base.RenderBody(doc, pdf);

            doc.Add(NewDeliveryListTable(Data));
            doc.Add(NewWeightsTable(MemberStats)
                .SetMarginTopMM(10).SetKeepTogether(true));
            doc.Add(NewBucketTable(Season, MemberBuckets, includePayment: true)
                .SetMarginTopMM(10).SetKeepTogether(true));

            if (Text != null) {
                doc.Add(new KernedParagraph(Text, 10)
                    .SetMarginTop(20).SetKeepTogether(true));
            }
        }

        protected Table NewDeliveryListTable(DeliveryConfirmationDeliveryData data) {
            var tbl = new Table(ColsMM(25, 7, 39, 14, 11, 11, 15, 12, 14, 3, 14), true)
                .SetWidth(UnitValue.CreatePercentValue(100)).SetFixedLayout()
                .SetBorderCollapse(BorderCollapsePropertyValue.COLLAPSE);

            tbl.AddHeaderCell(NewTh("Lieferschein-Nr.", rowspan: 2, left: true))
                .AddHeaderCell(NewTh("Pos.", rowspan: 2, left: true))
                .AddHeaderCell(NewTh("Sorte/Attribut/Bewirtschaftung\nZu-/Abschlag", rowspan: 2, left: true))
                .AddHeaderCell(NewTh("Qual.", rowspan: 2))
                .AddHeaderCell(NewTh("Gradation", colspan: 2))
                .AddHeaderCell(NewTh("Flächenbindung", colspan: 2))
                .AddHeaderCell(NewTh("Menge"))
                .AddHeaderCell(NewTh("gerebelt", rowspan: 3, rotated: true))
                .AddHeaderCell(NewTh("Davon\nabzuwerten"))
                .AddHeaderCell(NewTh("[°Oe]"))
                .AddHeaderCell(NewTh("[°KMW]"))
                .AddHeaderCell(NewTh("[kg]", colspan: 2))
                .AddHeaderCell(NewTh("[kg]"))
                .AddHeaderCell(NewTh("[kg]"));

            var lastVariety = "";
            foreach (var p in data.Rows) {
                var sub = new Table(ColsMM(25, 7, 39, 14, 11, 11, 15, 12, 14, 3, 14))
                    .SetWidth(UnitValue.CreatePercentValue(100)).SetFixedLayout()
                    .SetBorderCollapse(BorderCollapsePropertyValue.COLLAPSE)
                    .SetKeepTogether(true);
                if (lastVariety != "" && lastVariety != p.Variety) {
                    sub.SetBorderTop(new SolidBorder(BorderThickness));
                }
                var attr = p.Attribute != null || p.Cultivation != null;
                var rows = Math.Max(p.Buckets.Length, 1 + (attr ? 1 : 0) + p.Modifiers.Length);
                for (int i = 0; i < rows; i++) {
                    if (i == 0) {
                        sub.AddCell(NewTd(p.LsNr))
                            .AddCell(NewTd($"{p.DPNr:N0}", center: true))
                            .AddCell(NewTd(p.Variety))
                            .AddCell(NewTd(p.QualId, center: true))
                            .AddCell(NewTd($"{p.Gradation.Oe:N0}", center: true))
                            .AddCell(NewTd($"{p.Gradation.Kmw:N1}", center: true));
                    } else if (i == 1 && attr) {
                        sub.AddCell(NewCell(colspan: 2))
                            .AddCell(NewTd($"{p.Attribute}{(p.Attribute != null && p.Cultivation != null ? " / " : "")}{p.Cultivation}", 8, colspan: 2)
                                .SetPaddingsMM(0.125f, 1, 0.125f, 1))
                            .AddCell(NewCell(colspan: 2));
                    } else {
                        sub.AddCell(NewCell(colspan: 2));
                        if (i - (rows - p.Modifiers.Length) < p.Modifiers.Length) {
                            sub.AddCell(NewTd(p.Modifiers[i - (rows - p.Modifiers.Length)], 8, colspan: 2)
                                .SetPaddingsMM(0.125f, 0, 0.125f, 5));
                        } else {
                            sub.AddCell(NewCell(colspan: 2));
                        }
                        sub.AddCell(NewCell(colspan: 2));
                    }

                    if (i < p.Buckets.Length) {
                        var bucket = p.Buckets[i];
                        sub.AddCell(NewTd($"{bucket.Name}:", 8).SetHeight(10).SetPaddingsMM(0.125f, 0, 0.125f, 0));
                        sub.AddCell(NewTd($"{bucket.Value:N0}", right: true));
                    } else {
                        sub.AddCell(NewCell(colspan: 2));
                    }

                    if (i == p.Buckets.Length - 1) {
                        sub.AddCell(NewTd($"{p.Weight:N0}", right: true));
                        sub.AddCell(NewTd(p.IsNetWeight ? "\u2611" : "\u2610", 7, right: true).SetFont(SF).SetPadding(0));
                    } else {
                        sub.AddCell(NewCell(colspan: 2));
                    }

                    if (i == 0) {
                        sub.AddCell(NewCell(rowspan: rows));
                    }
                    lastVariety = p.Variety;
                }
                tbl.AddCell(new Cell(1, 11).SetPadding(0).SetBorder(Border.NO_BORDER).Add(sub));
            }

            tbl.AddCell(NewTd("Gesamt:", 12, colspan: 7, bold: true, borderTop: true)
                    .SetPaddingsMM(1, 1, 0, 1))
                .AddCell(NewTd($"{data.Rows.Sum(p => p.Weight):N0}", 12, colspan: 2, right: true, bold: true, borderTop: true)
                    .SetPaddingsMM(1, 1, 0, 1))
                .AddCell(NewTd(colspan: 2, borderTop: true)
                    .SetPaddingsMM(1, 1, 0, 1))
                .AddCell(NewTd("Davon abgewertet:", 10, colspan: 7)
                    .SetPaddingsMM(0, 1, 0.5f, 1))
                .AddCell(NewTd($"{data.Rows.Where(p => p.IsDepreciated).Sum(p => p.Weight):N0}", 10, colspan: 2, right: true)
                    .SetPaddingsMM(0, 1, 0.5f, 1))
                .AddCell(NewCell(colspan: 2)
                    .SetPaddingsMM(0, 1, 0.5f, 1));

            return tbl;
        }
    }
}