using System;
using Server.Buffers;
using Server.Items;
using Server.Mobiles;
using Server.Targeting;

namespace Server.SkillHandlers
{
    public static class ForensicEvaluation
    {
        public static void Initialize()
        {
            SkillInfo.Table[(int)SkillName.Forensics].Callback = OnUse;
        }

        public static TimeSpan OnUse(Mobile m)
        {
            m.Target = new ForensicTarget();
            m.RevealingAction();

            m.SendLocalizedMessage(501000); // Show me the crime.

            return TimeSpan.FromSeconds(1.0);
        }

        public class ForensicTarget : Target
        {
            public ForensicTarget() : base(10, false, TargetFlags.None)
            {
            }

            protected override void OnTarget(Mobile from, object target)
            {
                if (target is Mobile)
                {
                    if (from.CheckTargetSkill(SkillName.Forensics, target, 40.0, 100.0))
                    {
                        if (target is PlayerMobile pm && pm.NpcGuild == NpcGuild.ThievesGuild)
                        {
                            from.SendLocalizedMessage(501004); // That individual is a thief!
                        }
                        else
                        {
                            from.SendLocalizedMessage(501003); // You notice nothing unusual.
                        }
                    }
                    else
                    {
                        from.SendLocalizedMessage(501001); // You cannot determain anything useful.
                    }
                }
                else if (target is Corpse c)
                {
                    if (from.CheckTargetSkill(SkillName.Forensics, c, 0.0, 100.0))
                    {
                        if (c.m_Forensicist != null)
                        {
                            from.SendLocalizedMessage(
                                1042750,
                                c.m_Forensicist
                            ); // The forensicist  ~1_NAME~ has already discovered that:
                        }
                        else
                        {
                            c.m_Forensicist = from.Name;
                        }

                        if (((Body)c.Amount).IsHuman)
                        {
                            from.SendLocalizedMessage(
                                1042751,
                                c.Killer == null ? "no one" : c.Killer.Name
                            ); // This person was killed by ~1_KILLER_NAME~
                        }

                        if (c.Looters.Count > 0)
                        {
                            using var sb = new ValueStringBuilder(stackalloc char[128]);
                            for (var i = 0; i < c.Looters.Count; i++)
                            {
                                if (i > 0)
                                {
                                    sb.Append(i == c.Looters.Count - 1 ? ", and " : ", ");
                                }

                                sb.Append(c.Looters[i].Name);
                            }

                            from.SendLocalizedMessage(
                                1042752,
                                sb.ToString()
                            ); // This body has been disturbed by ~1_PLAYER_NAMES~
                        }
                        else
                        {
                            from.SendLocalizedMessage(501002); // The corpse has not be desecrated.
                        }
                    }
                    else
                    {
                        from.SendLocalizedMessage(501001); // You cannot determain anything useful.
                    }
                }
                else if (target is ILockpickable p)
                {
                    if (p.Picker != null)
                    {
                        from.SendLocalizedMessage(1042749, p.Picker.Name); // This lock was opened by ~1_PICKER_NAME~
                    }
                    else
                    {
                        from.SendLocalizedMessage(501003); // You notice nothing unusual.
                    }
                }
            }
        }
    }
}