#if defined(NDEBUG) || !defined(NOPTIONS)

#include "../src/collect.h"
#include "../src/dense.h"
#include "../src/flags.h"
#include "../src/import.h"
#include "../src/inline.h"
#include "../src/propsearch.h"
#include "../src/trail.h"

#include "test.h"

#define REDUNDANT_LITERAL 2
#define IRREDUNDANT_LITERAL 4

static void flush_unit (kissat *solver) {
  clause *conflict = kissat_search_propagate (solver);
  assert (!conflict);
  assert (kissat_trail_flushed (solver));
}

static void add_unit_to_satisfy_redundant_clause (kissat *solver) {
  if (solver->values[REDUNDANT_LITERAL])
    return;
  kissat_learned_unit (solver, REDUNDANT_LITERAL);
  flush_unit (solver);
}

static void add_unit_to_satisfy_irredundant_clause (kissat *solver) {
  if (solver->values[IRREDUNDANT_LITERAL])
    return;
  kissat_learned_unit (solver, IRREDUNDANT_LITERAL);
  flush_unit (solver);
}

static void just_import_and_activate_four_variables (kissat *solver) {
  int ilit;
  ilit = kissat_import_literal (solver, 1);
  assert (ilit == 0);
  kissat_activate_literal (solver, ilit);
  ilit = kissat_import_literal (solver, 2);
  assert (ilit == 2);
  kissat_activate_literal (solver, ilit);
  ilit = kissat_import_literal (solver, 3);
  assert (ilit == 4);
  kissat_activate_literal (solver, ilit);
  ilit = kissat_import_literal (solver, 4);
  assert (ilit == 6);
  kissat_activate_literal (solver, ilit);
}

static void add_large_redundant_clause (kissat *solver) {
  assert (solver->vars == 4);
  PUSH_STACK (solver->clause, 0);
  PUSH_STACK (solver->clause, REDUNDANT_LITERAL);
  PUSH_STACK (solver->clause, 6);
  kissat_new_redundant_clause (solver, 1);
}

static void add_large_irredundant_clause (kissat *solver) {
  assert (solver->vars == 4);
  PUSH_STACK (solver->clause, 0);
  PUSH_STACK (solver->clause, IRREDUNDANT_LITERAL);
  PUSH_STACK (solver->clause, 6);
  kissat_new_irredundant_clause (solver);
}

static void mark_redundant_clauses_as_garbage (kissat *solver) {
  for (all_clauses (c))
    if (c->redundant)
      kissat_mark_clause_as_garbage (solver, c);
}

static void mark_irredundant_clauses_as_garbage (kissat *solver) {
  for (all_clauses (c))
    if (!c->redundant)
      kissat_mark_clause_as_garbage (solver, c);
}

#define IFBIT(BIT, FUNCTION) \
  do { \
    assert (BIT < bits); \
    if ((i & (1 << BIT))) \
      FUNCTION (solver); \
  } while (0)

static void test_collect (void) {
  const unsigned bits = 14;
  for (unsigned i = 0; i < (1u << bits); i++) {
    if (!(i & ((i << 7) | (i << 9) | (i << 11))))
      continue;

    kissat *solver = kissat_init ();
    tissat_init_solver (solver);
#if !defined(NDEBUG)
    solver->options.check = 0;
#endif
    just_import_and_activate_four_variables (solver);

    IFBIT (0, add_large_redundant_clause);
    IFBIT (1, add_large_irredundant_clause);
    IFBIT (2, add_large_redundant_clause);
    IFBIT (3, add_large_irredundant_clause);
    IFBIT (4, add_large_redundant_clause);

    bool redundant_unit;
    bool irredundant_unit;

    if (i & (1 << 13)) {
      redundant_unit = irredundant_unit = false;
      IFBIT (5, mark_redundant_clauses_as_garbage);
      IFBIT (6, mark_irredundant_clauses_as_garbage);
    } else {
      redundant_unit = ((i & (i << 5)) != 0);
      irredundant_unit = ((i & (i << 6)) != 0);
      IFBIT (5, add_unit_to_satisfy_redundant_clause);
      IFBIT (6, add_unit_to_satisfy_irredundant_clause);
    }

    if (i & (i << 7)) {
      bool compact = !(i & (i << 8));
      kissat_sparse_collect (solver, compact, 0);
    } else if (i & (i << 8)) {
      if (!redundant_unit)
        add_unit_to_satisfy_redundant_clause (solver);
      if (!irredundant_unit)
        add_unit_to_satisfy_irredundant_clause (solver);
      redundant_unit = irredundant_unit = true;
    }

    if (i & (i << 9)) {
      kissat_enter_dense_mode (solver, 0);
      kissat_dense_collect (solver);
      bool flush = !(i & (i << 10));
      kissat_resume_sparse_mode (solver, flush, 0);
    } else if (i & (i << 10)) {
      if (!redundant_unit)
        add_unit_to_satisfy_redundant_clause (solver);
      if (!irredundant_unit)
        add_unit_to_satisfy_irredundant_clause (solver);
    }

    if (i & (i << 11)) {
      bool compact = !(i & (i << 12));
      kissat_sparse_collect (solver, compact, 0);
    }

    kissat_release (solver);
  }
}

void tissat_schedule_collect (void) { SCHEDULE_FUNCTION (test_collect); }

#else

void tissat_schedule_collect (void) {}

#endif
