using SoulHarvest.Common;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
using System;
using System.Collections.Generic;
using Terraria;
using Terraria.Audio;
using Terraria.GameContent;
using Terraria.ID;
using Terraria.Localization;
using Terraria.ModLoader;
using Terraria.UI;

namespace SoulHarvest.UI;

internal sealed class AltarEquipmentTreeNode
{
    public DeathAltarUpgradeType? UpgradeType { get; }
    public Vector2 Position { get; }
    public float Radius { get; }
    public bool IsRoot => UpgradeType is null;
    public bool Completed { get; private set; }
    public bool CanRequest { get; private set; }
    public bool Affordable { get; private set; }
    public bool Lit => IsRoot || Completed || CanRequest && Affordable;
    public string Title { get; private set; } = string.Empty;
    public string Category { get; private set; } = string.Empty;
    public string Description { get; private set; } = string.Empty;
    public string Status { get; private set; } = string.Empty;
    public string Cost { get; private set; } = string.Empty;

    private AltarEquipmentTreeNode(DeathAltarUpgradeType? type, Vector2 position, float radius)
    {
        UpgradeType = type;
        Position = position;
        Radius = radius;
    }

    public static AltarEquipmentTreeNode Root(Vector2 position) => new(null, position, 48f);

    public static AltarEquipmentTreeNode Upgrade(DeathAltarUpgradeType type, Vector2 position, bool convergence)
    {
        return new AltarEquipmentTreeNode(type, position, convergence ? 40f : 32f);
    }

    public void Refresh(string itemName, IDeathAltarUpgradeable upgradeable, int essenceCount, int souls)
    {
        if (IsRoot)
        {
            Completed = true;
            CanRequest = false;
            Affordable = true;
            Title = itemName;
            Category = Text("RootCategory");
            Description = Text("RootDescription");
            Status = Text("RootStatus");
            Cost = string.Empty;
            return;
        }

        DeathAltarUpgradeType type = UpgradeType!.Value;
        DeathAltarPrice price = upgradeable.GetUpgradePrice(type);
        DeathAltarUnavailableReason unavailableReason = upgradeable.GetUnavailableReason(type);
        Completed = !price.IsAvailable && unavailableReason == DeathAltarUnavailableReason.Maxed;
        CanRequest = price.IsAvailable;
        Affordable = price.Currency switch
        {
            DeathAltarCurrency.Souls => souls >= price.Amount,
            DeathAltarCurrency.SoulEssence => essenceCount >= price.Amount,
            _ => true
        };
        Title = Language.GetTextValue($"Mods.SoulHarvest.UI.UpgradeNames.{type}");
        Category = Text("NodeCategory");
        if (price.IsAvailable)
        {
            string current = upgradeable.GetCurrentUpgradeValue(type);
            string next = upgradeable.GetNextUpgradeValue(type);
            Description = Text("ValueTransition", current, next);
            Status = Affordable ? Text("StatusReady") : Text("StatusInsufficient");
            Cost = DeathAltarUIState.FormatPrice(price);
        }
        else
        {
            Description = Language.GetTextValue($"Mods.SoulHarvest.UI.UnavailableReasons.{unavailableReason}");
            Status = Completed ? Text("StatusComplete") : Text("StatusLocked");
            Cost = string.Empty;
        }
    }

    private static string Text(string key, params object[] args)
    {
        return Language.GetTextValue($"Mods.SoulHarvest.UI.EquipmentTree.{key}", args);
    }
}