#include <blue/ds/hashmap.h>
#include <mie/ir/const.h>
#include <mie/ir/data.h>
#include <mie/ir/func.h>
#include <mie/ir/module.h>
#include <mie/type.h>
#include <stdlib.h>
#include <string.h>

struct mie_module *mie_module_create(void)
{
	struct mie_module *out = malloc(sizeof *out);
	if (!out) {
		return NULL;
	}

	memset(out, 0x0, sizeof *out);

	mie_value_init(&out->m_base, MIE_VALUE_MODULE);

	out->m_names = mie_name_map_create();
	out->m_data = b_hashmap_create(NULL, NULL);
	out->m_data_strings = b_hashmap_create(NULL, NULL);

	return out;
}

void mie_module_add_function(
	struct mie_module *mod, struct mie_func *func, const char *name)
{
	struct mie_value *v
		= mie_module_generate_value_name(mod, MIE_VALUE(func), name);
	if (!v) {
		return;
	}

	b_queue_push_back(&mod->m_func, &v->v_entry);
}

struct mie_data *mie_module_get_string_ptr(struct mie_module *mod, const char *s)
{
	b_hashmap_key key = {
		.key_data = s,
		.key_size = strlen(s),
	};

	const b_hashmap_value *entry = b_hashmap_get(mod->m_data_strings, &key);
	if (entry) {
		return entry->value_data;
	}

	return NULL;
}

struct mie_data *mie_module_get_data(struct mie_module *mod, const char *name)
{
	b_hashmap_key key = {
		.key_data = name,
		.key_size = strlen(name),
	};

	const b_hashmap_value *entry = b_hashmap_get(mod->m_data, &key);
	if (entry) {
		return entry->value_data;
	}

	/* don't search m_data_strings, as it is keyed by the string contents
	 * rather than the data entry name, and its entries are duplicated in
	 * m_data anyway */

	return NULL;
}

enum b_status mie_module_put_data(
	struct mie_module *mod, struct mie_data *data, const char *name)
{
	struct mie_value *v
		= mie_module_generate_value_name(mod, MIE_VALUE(data), name);

	b_hashmap_key key = {
		.key_data = v->v_name.n_str,
		.key_size = strlen(name),
	};

	b_hashmap_value value = {
		.value_data = data,
		.value_size = sizeof *data,
	};

	b_hashmap_put(mod->m_data, &key, &value);

	if (data->d_type != MIE_DATA_CONST) {
		return B_SUCCESS;
	}

	struct mie_const *const_data = data->d_const.c_value;
	if (const_data->c_type->t_id == MIE_TYPE_STR) {
		struct mie_string *s = MIE_STRING(const_data);
		key.key_data = s->s_value;
		key.key_size = strlen(key.key_data);
		b_hashmap_put(mod->m_data_strings, &key, &value);
	}

	return B_SUCCESS;
}

struct mie_value *mie_module_generate_value_name(
	struct mie_module *mod, struct mie_value *val, const char *hint)
{
	struct mie_name *name
		= mie_name_map_put(mod->m_names, &val->v_name, hint, 0);
	return b_unbox(struct mie_value, name, v_name);
}

static void cleanup(struct mie_value *value)
{
	struct mie_module *module = MIE_MODULE(value);

	b_queue_entry *entry = b_queue_first(&module->m_records);
	b_queue_entry *next = NULL;
	while (entry) {
		struct mie_value *v = b_unbox(struct mie_value, entry, v_entry);
		next = b_queue_next(entry);
		b_queue_delete(&module->m_records, entry);
		mie_value_destroy(v);
		entry = next;
	}

	entry = b_queue_first(&module->m_types);
	while (entry) {
		struct mie_value *v = b_unbox(struct mie_value, entry, v_entry);
		next = b_queue_next(entry);
		b_queue_delete(&module->m_types, entry);
		mie_value_destroy(v);
		entry = next;
	}

	entry = b_queue_first(&module->m_func);
	while (entry) {
		struct mie_value *v = b_unbox(struct mie_value, entry, v_entry);
		next = b_queue_next(entry);
		b_queue_delete(&module->m_func, entry);
		mie_value_destroy(v);
		entry = next;
	}

	b_hashmap_unref(module->m_data_strings);
	b_hashmap_unref(module->m_data);
}

const struct mie_value_type module_value_type = {
	.t_id = MIE_VALUE_MODULE,
	.t_cleanup = cleanup,
};