public void AddSkill(HeroBattle hero, string skillName, string knowledgeLevel)
{
// Verifica se herói tem experiência disponível para adquirir a skill.
KnowledgeLevel level = null;
if (knowledgeLevel == null)
{
throw new CannotUseNullAsKnowledge();
}
if (skillName == null)
{
throw new CannotUseNullAsSkillException();
}
if (KnowledgeLevel.Assimilate.Name.Equals(knowledgeLevel.ToLower()))
{
level = KnowledgeLevel.Assimilate;
}
else if (KnowledgeLevel.Learn.Name.Equals(knowledgeLevel.ToLower()))
{
level = KnowledgeLevel.Learn;
}
else
{
throw new CannotFindKnowledgeException();
}
if (StatusService.GetPoints(hero.Name) < level.NecessaryPoints)
{
throw new NecessaryPointsIsNotEnoughException();
}
// Verifica se a skill existe e pode ser usada pela classe do herói.
var skill = GetSkillByName(skillName);
if (skill == null)
{
throw new CannotFindSkillException(skillName);
}
if (!CanBeUsedBy(hero, skill))
{
throw new ItemCannotBeUsedByThisClassException();
}
// Verifica se o herói já possui a skill
var skillKnowledge = GetSkillsFrom(hero.Name).FirstOrDefault(sk => sk.skill.Equals(skillName));
if (skillKnowledge != null)
{
if (knowledgeLevel.Equals(skillKnowledge.knowledge))
{
throw new SkillAlreadyLearnedException();
}
// não permite assimilar uma skill já aprendida.
var alreadyLearnedTheSkill = skillKnowledge.knowledge.Equals(KnowledgeLevel.Learn.Name);
if (alreadyLearnedTheSkill)
{
throw new CannotAddSkillWithLessKnowledgeLevelException();
}
}
// Não permite adicionar a nova skill se não cumprir os requisitos.
if (skill.requirements != null &&
hero.Skills.All(s => s.name?.ToLower().Equals(skill.requirements[0]?.ToLower()) == null))
{
throw new CannotFindRequiredSkillToAdd(skillName, skill.requirements[0]);
}
// Adiciona a skill ao herói.
var skills = hero.Skills.ToList();
skills.Add(skill);
hero.Skills = skills.ToArray();
StatusService.ConsumeTheNecessaryPoints(hero.Name, level);
Save(hero, skillName, knowledgeLevel);
}
