package game

import (
	"fmt"
	"strings"

	"thehouseoficarus/internal/net"
	"thehouseoficarus/internal/player"
	"thehouseoficarus/internal/world"
)

func (g *Game) tryFinishingBlow(sess *net.Session, input string) bool {
	p := sess.Player
	cs := g.Combat.Get(p.Name)
	if cs == nil {
		return false
	}
	mob := g.MobStore.GetInstance(cs.MobID)
	if mob == nil || mob.FinishingBlow == "" || mob.HP != 1 {
		return false
	}
	lower := strings.ToLower(input)
	var itemPart, targetPart string
	for _, sep := range []string{" on ", " with "} {
		if idx := strings.Index(lower, sep); idx > 0 {
			itemPart = strings.TrimSpace(input[:idx])
			targetPart = strings.TrimSpace(input[idx+len(sep):])
			break
		}
	}
	if targetPart == "" {
		itemPart = strings.TrimSpace(input)
		if mob.MatchQuality(itemPart) != world.MatchNone {
			targetPart = itemPart
			itemPart = strings.TrimSpace(mob.FinishingBlow)
		}
	}
	if targetPart == "" {
		return false
	}
	if mob.MatchQuality(targetPart) == world.MatchNone {
		return false
	}
	g.doFinishingBlow(sess, p, mob, itemPart)
	return true
}

func (g *Game) doFinishingBlow(sess *net.Session, p *player.Player, mob *world.MobInstance, itemInput string) {
	fbDef, err := g.ItemStore.Load(mob.FinishingBlow)
	if err != nil {
		sess.WriteLine("Something went wrong.")
		return
	}
	if !fbDef.MatchesName(itemInput) && !strings.EqualFold(itemInput, fbDef.ID) {
		sess.WriteLine(fmt.Sprintf("That won't work on %s. You need %s.", mobDisplayName(mob, true), g.itemColorize(sess, fbDef, fbDef.Name)))
		return
	}
	if !p.HasItem(mob.FinishingBlow) {
		sess.WriteLine(fmt.Sprintf("You don't have any %s.", g.itemColorize(sess, fbDef, fbDef.Name)))
		return
	}
	autoKey := "assassin_unlocked_auto_" + mob.FinishingBlow
	consumed := true
	if p.Flags != nil {
		if val, ok := p.Flags[autoKey]; ok {
			if b, ok := val.(bool); ok && b {
				consumed = false
			}
		}
	}
	if consumed {
		p.RemoveItem(mob.FinishingBlow, 1)
	}
	sess.WriteLine(fmt.Sprintf("You use the %s on %s!", g.itemColorize(sess, fbDef, fbDef.Name), g.colorize(sess, "mob", mobDisplayName(mob, true))))
	mob.HP = 0
	g.endCombat(sess, p, mob)
}