#include "World/CDamageVulnerability.hpp"

namespace urde
{

static inline bool is_normal_or_weak(EVulnerability vuln)
{
    return (vuln == EVulnerability::DoubleDamage || vuln == EVulnerability::Normal);
}

static inline bool is_not_immune(EVulnerability vuln)
{
    return vuln != EVulnerability::Immune &&
           vuln != EVulnerability::DirectImmune;
}

void CDamageVulnerability::ConstructNew(CInputStream& in, int propCount)
{
    propCount -= 3;
    EVulnerability* vulns = &x0_power;
    for (int i = 0; i < std::min(propCount, 15); ++i)
        vulns[i] = EVulnerability(in.readUint32Big());

    if (propCount < 15)
    {
        for (int i = propCount; i < 15; ++i)
            vulns[i] = EVulnerability::Reflect;
    }

    for (int i = 15; i < propCount; ++i)
        in.readUint32Big();

    x5c_ = EVulnerability(in.readUint32Big());
    EVulnerability* vulns2 = &x3c_chargedPower;
    in.readUint32Big();
    for (int i = 0; i < 4; ++i)
        vulns2[i] = EVulnerability(in.readUint32Big());

    x60_chargedPhazon = EVulnerability(in.readUint32Big());
    EVulnerability* vulns3 = &x4c_superMissile;
    in.readUint32Big();
    for (int i = 0; i < 4; ++i)
        vulns3[i] = EVulnerability(in.readUint32Big());

    x64_phazonCombo = EVulnerability(in.readUint32Big());
}

CDamageVulnerability::CDamageVulnerability(CInputStream& in)
{
    u32 propCount = in.readUint32Big();
    if (propCount == 11)
    {
        EVulnerability* vulns = &x0_power;
        for (int i = 0; i < 15; ++i)
            vulns[i] = EVulnerability(in.readUint32Big());

        if (propCount == 15)
            x5c_ = EVulnerability::DoubleDamage;
        else
            x5c_ = EVulnerability(in.readUint32Big());

        x3c_chargedPower = x0_power;
        x4c_superMissile = x0_power;
        x40_chargedIce = x4_ice;
        x50_iceSpreader = x4_ice;
        x44_chargedWave = x8_wave;
        x54_wavebuster = x8_wave;
        x48_chargedPlasma = xc_plasma;
        x58_flamethrower = xc_plasma;
    }
    else
        ConstructNew(in, propCount);
}

EVulnerability CDamageVulnerability::GetPhazonVulnerability(const CWeaponMode& mode) const
{
    if (mode.IsCharged())
        return x60_chargedPhazon;
    if (mode.IsComboed())
        return x64_phazonCombo;
    return x5c_;
}

bool CDamageVulnerability::WeaponHurts(const CWeaponMode& mode, bool ignoreDirect) const
{
    if (mode.GetType() == EWeaponType::None || mode.GetType() > EWeaponType::Unused2)
        return false;
    if (mode.IsInstantKill())
        return true;

    EVulnerability normalVuln = (&x0_power)[u32(mode.GetType())];
    bool normalHurts = true;
    if (ignoreDirect)
        normalHurts = is_not_immune(normalVuln);
    else
    {
        if (!is_not_immune(normalVuln) &&
            (normalVuln != EVulnerability::DirectDouble && normalVuln != EVulnerability::DirectNormal))
            normalHurts = false;
    }

    bool chargedHurts = true;
    bool comboedHurts = true;
    if (mode.GetType() < EWeaponType::Bomb)
    {
        EVulnerability chargedVuln = (&x3c_chargedPower)[u32(mode.GetType())];
        EVulnerability comboedVuln = (&x4c_superMissile)[u32(mode.GetType())];
        if (ignoreDirect)
        {
            chargedHurts = is_not_immune(chargedVuln);
            comboedHurts = is_not_immune(comboedVuln);
        }
        else
        {
            if (!is_not_immune(chargedVuln) &&
                (chargedVuln != EVulnerability::DirectDouble && chargedVuln != EVulnerability::DirectNormal))
                chargedHurts = false;
            if (!is_not_immune(comboedVuln) &&
                (comboedVuln != EVulnerability::DirectDouble && comboedVuln != EVulnerability::DirectNormal))
                comboedHurts = false;
        }
    }

    if (normalHurts && !mode.IsCharged() && !mode.IsComboed())
        return true;
    if (chargedHurts && mode.IsCharged())
        return true;
    if (comboedHurts && mode.IsComboed())
        return true;
    return false;
}

bool CDamageVulnerability::WeaponHits(const CWeaponMode& mode, bool checkDirect) const
{
    if (mode.GetType() == EWeaponType::None || mode.GetType() > EWeaponType::Unused2)
        return false;
    if (mode.IsInstantKill())
        return true;

    bool normalVuln;
    if (!checkDirect)
        normalVuln = (&x0_power)[u32(mode.GetType())] != EVulnerability::Immune;
    else
        normalVuln = is_not_immune((&x0_power)[u32(mode.GetType())]);

    bool chargedVuln = true;
    bool comboedVuln = true;

    if (mode.GetType() < EWeaponType::Bomb)
    {
        if (!checkDirect)
        {
            chargedVuln = (&x3c_chargedPower)[u32(mode.GetType())] != EVulnerability::Immune;
            comboedVuln = (&x4c_superMissile)[u32(mode.GetType())] != EVulnerability::Immune;
        }
        else
        {
            chargedVuln = is_not_immune((&x3c_chargedPower)[u32(mode.GetType())]);
            comboedVuln = is_not_immune((&x4c_superMissile)[u32(mode.GetType())]);
        }
    }

    if (normalVuln && !mode.IsCharged() && !mode.IsComboed())
        return true;
    if (chargedVuln && mode.IsCharged())
        return true;
    if (comboedVuln && mode.IsComboed())
        return true;
    return false;
}

EVulnerability CDamageVulnerability::GetVulnerability(const CWeaponMode& mode, bool ignoreDirect) const
{
    if (mode.GetType() == EWeaponType::None || mode.GetType() > EWeaponType::Unused2)
        return EVulnerability::Reflect;

    if (mode.IsInstantKill())
        return EVulnerability::Normal;

    EVulnerability vuln = (&x0_power)[u32(mode.GetType())];
    if (mode.IsCharged())
    {
        if (mode.GetType() < EWeaponType::Bomb)
            vuln = (&x3c_chargedPower)[u32(mode.GetType())];
        else
            vuln = EVulnerability::Normal;
    }

    if (mode.IsComboed())
    {
        if (mode.GetType() < EWeaponType::Bomb)
            vuln = (&x3c_chargedPower)[u32(mode.GetType())];
        else
            vuln = EVulnerability::Normal;
    }

    if (ignoreDirect)
        return vuln;

    if (vuln == EVulnerability::DirectDouble)
        return EVulnerability::DoubleDamage;
    else if (vuln == EVulnerability::DirectNormal)
        return EVulnerability::Normal;
    else if (vuln == EVulnerability::DirectImmune)
        return EVulnerability::Immune;

    return vuln;
}
}