#include <chuffed/core/propagator.h>

void bool_rel(BoolView x, BoolRelType t, BoolView y, BoolView z) {
//	NOT_SUPPORTED;
	BoolView v[3] = {x, y, z};
	int u = 0;

	for (int l = 1; l <= 3; l++) {
		for (int i = 0; i < 8; i++) {
			if (bitcount<int>(i) != l) continue;
			for (int j = 0; j < 8; j++) {
				if (j & ~i) continue;
				int flags = 0;
				for (int k = 0; k < 8; k++) {
					bool pass = true;
					for (int m = 0; m < 3; m++) {
						if ((i & (1<<m)) == 0) continue;
						if (((k^j) & (1<<m)) == 0) pass = false;
					}
					if (pass) flags |= (1<<k);
				}
				if (t & flags) continue;
				if ((flags & ~u) == 0) continue;
				vec<Lit> ps;
				for (int m = 0; m < 3; m++) {
					if ((i & (1<<m)) == 0) continue;
					bool p = (j>>m)&1;
					if (l == 1) {
						if (v[m].setValNotR(p)) if (!v[m].setVal(p)) TL_FAIL();
					}
					ps.push(v[m].getLit(p));
				}
				if (l >= 2) sat.addClause(ps);
				u |= flags;
			}
		}
	}
}

//-----

// \/ x_i \/ !y_i
void bool_clause(vec<BoolView>& x, vec<BoolView>& y) {
	vec<Lit> ps;
	for (int i = 0; i < x.size(); i++) ps.push(x[i]);
	for (int i = 0; i < y.size(); i++) ps.push(~y[i]);
	sat.addClause(ps);
}

// \/ x_i
void bool_clause(vec<BoolView>& x) {
	vec<BoolView> b;
	bool_clause(x, b);
}


//-----

// \/ x_i \/ !y_i <-> z
// n+1 clauses

void array_bool_or(vec<BoolView>& x, vec<BoolView>& y, BoolView z) {
	for (int i = 0; i < x.size(); i++) sat.addClause(~x[i], z);
	for (int i = 0; i < y.size(); i++) sat.addClause(y[i], z);
	// Add clause !c \/ a_i \/ !b_i
	vec<Lit> ps;
	ps.push(~z);
	for (int i = 0; i < x.size(); i++) ps.push(x[i]);
	for (int i = 0; i < y.size(); i++) ps.push(~y[i]);
	sat.addClause(ps);
}

void array_bool_or(vec<BoolView>& x, BoolView z) {
	vec<BoolView> y;
	array_bool_or(x, y, z);
}

// /\ x_i /\ !y_i <-> z
void array_bool_and(vec<BoolView>& x, vec<BoolView>& y, BoolView z) {
	array_bool_or(y, x, ~z);
}

void array_bool_and(vec<BoolView>& x, BoolView z) {
	vec<BoolView> y;
	array_bool_and(x, y, z);
}