tildefriends/src/database.c

182 lines
7.2 KiB
C

#include "database.h"
#include <assert.h>
#include <malloc.h>
#include <stdbool.h>
#include <string.h>
#include <sqlite3.h>
static JSClassID _database_class_id;
static int _database_count;
typedef struct _database_t {
JSContext* context;
JSValue object;
void* task;
sqlite3* db;
const char* id;
} database_t;
static JSValue _database_create(JSContext* context, JSValueConst this_val, int argc, JSValueConst* argv, int magic, JSValue* data);
static void _database_finalizer(JSRuntime *runtime, JSValue value);
static JSValue _database_get(JSContext* context, JSValueConst this_val, int argc, JSValueConst* argv);
static JSValue _database_set(JSContext* context, JSValueConst this_val, int argc, JSValueConst* argv);
static JSValue _database_remove(JSContext* context, JSValueConst this_val, int argc, JSValueConst* argv);
static JSValue _database_get_all(JSContext* context, JSValueConst this_val, int argc, JSValueConst* argv);
static JSValue _database_get_like(JSContext* context, JSValueConst this_val, int argc, JSValueConst* argv);
void tf_database_init(JSContext* context, sqlite3* sqlite) {
JS_NewClassID(&_database_class_id);
JSClassDef def = {
.class_name = "Database",
.finalizer = &_database_finalizer,
};
if (JS_NewClass(JS_GetRuntime(context), _database_class_id, &def) != 0) {
printf("Failed to register database.\n");
}
JSValue global = JS_GetGlobalObject(context);
JSValue data[] = { JS_NewInt64(context, (int64_t)(intptr_t)sqlite) };
JSValue constructor = JS_NewCFunctionData(context, _database_create, 0, 0, 1, data);
JS_SetConstructorBit(context, constructor, true);
JS_SetPropertyStr(context, global, "Database", constructor);
JS_FreeValue(context, global);
}
static JSValue _database_create(JSContext* context, JSValueConst this_val, int argc, JSValueConst* argv, int magic, JSValue* data) {
++_database_count;
JSValue object = JS_NewObjectClass(context, _database_class_id);
sqlite3* db = NULL;
JS_ToInt64(context, (int64_t*)&db, data[0]);
database_t* database = malloc(sizeof(database_t));
*database = (database_t) {
.task = JS_GetContextOpaque(context),
.context = context,
.object = object,
.db = db,
};
const char* id = JS_ToCString(context, argv[0]);
database->id = strdup(id);
JS_FreeCString(context, id);
JS_SetOpaque(object, database);
JS_SetPropertyStr(context, object, "get", JS_NewCFunction(context, _database_get, "get", 1));
JS_SetPropertyStr(context, object, "set", JS_NewCFunction(context, _database_set, "set", 2));
JS_SetPropertyStr(context, object, "remove", JS_NewCFunction(context, _database_remove, "remove", 1));
JS_SetPropertyStr(context, object, "getAll", JS_NewCFunction(context, _database_get_all, "getAll", 0));
JS_SetPropertyStr(context, object, "getLike", JS_NewCFunction(context, _database_get_like, "getLike", 1));
return object;
}
static void _database_finalizer(JSRuntime *runtime, JSValue value) {
database_t* database = JS_GetOpaque(value, _database_class_id);
if (database) {
free((void*)database->id);
free(database);
}
--_database_count;
}
static JSValue _database_get(JSContext* context, JSValueConst this_val, int argc, JSValueConst* argv) {
JSValue entry = JS_UNDEFINED;
database_t* database = JS_GetOpaque(this_val, _database_class_id);
if (database) {
sqlite3_stmt* statement;
if (sqlite3_prepare(database->db, "SELECT value FROM properties WHERE id = $1 AND key = $2", -1, &statement, NULL) == SQLITE_OK) {
size_t length;
const char* keyString = JS_ToCStringLen(context, &length, argv[0]);
if (sqlite3_bind_text(statement, 1, database->id, -1, NULL) == SQLITE_OK &&
sqlite3_bind_text(statement, 2, keyString, length, NULL) == SQLITE_OK &&
sqlite3_step(statement) == SQLITE_ROW) {
entry = JS_NewStringLen(context, (const char*)sqlite3_column_text(statement, 0), sqlite3_column_bytes(statement, 0));
}
sqlite3_finalize(statement);
}
}
return entry;
}
JSValue _database_set(JSContext* context, JSValueConst this_val, int argc, JSValueConst* argv) {
database_t* database = JS_GetOpaque(this_val, _database_class_id);
if (database) {
sqlite3_stmt* statement;
if (sqlite3_prepare(database->db, "INSERT OR REPLACE INTO properties (id, key, value) VALUES ($1, $2, $3)", -1, &statement, NULL) == SQLITE_OK) {
size_t keyLength;
const char* keyString = JS_ToCStringLen(context, &keyLength, argv[0]);
size_t valueLength;
const char* valueString = JS_ToCStringLen(context, &valueLength, argv[1]);
if (sqlite3_bind_text(statement, 1, database->id, -1, NULL) == SQLITE_OK &&
sqlite3_bind_text(statement, 2, keyString, keyLength, NULL) == SQLITE_OK &&
sqlite3_bind_text(statement, 3, valueString, valueLength, NULL) == SQLITE_OK &&
sqlite3_step(statement) == SQLITE_OK) {
}
sqlite3_finalize(statement);
}
}
return JS_UNDEFINED;
}
JSValue _database_remove(JSContext* context, JSValueConst this_val, int argc, JSValueConst* argv) {
database_t* database = JS_GetOpaque(this_val, _database_class_id);
if (database) {
sqlite3_stmt* statement;
if (sqlite3_prepare(database->db, "DELETE FROM properties WHERE id = $1 AND key = $2", -1, &statement, NULL) == SQLITE_OK) {
size_t keyLength;
const char* keyString = JS_ToCStringLen(context, &keyLength, argv[0]);
if (sqlite3_bind_text(statement, 1, database->id, -1, NULL) == SQLITE_OK &&
sqlite3_bind_text(statement, 2, keyString, keyLength, NULL) == SQLITE_OK &&
sqlite3_step(statement) == SQLITE_OK) {
}
sqlite3_finalize(statement);
}
}
return JS_UNDEFINED;
}
JSValue _database_get_all(JSContext* context, JSValueConst this_val, int argc, JSValueConst* argv) {
JSValue array = JS_UNDEFINED;
database_t* database = JS_GetOpaque(this_val, _database_class_id);
if (database) {
sqlite3_stmt* statement;
if (sqlite3_prepare(database->db, "SELECT key, value FROM properties WHERE id = $1", -1, &statement, NULL) == SQLITE_OK) {
if (sqlite3_bind_text(statement, 1, database->id, -1, NULL) == SQLITE_OK) {
array = JS_NewArray(context);
uint32_t index = 0;
while (sqlite3_step(statement) == SQLITE_ROW) {
JS_SetPropertyUint32(context, array, index++, JS_NewStringLen(context, (const char*)sqlite3_column_text(statement, 0), sqlite3_column_bytes(statement, 0)));
}
}
sqlite3_finalize(statement);
}
}
return array;
}
JSValue _database_get_like(JSContext* context, JSValueConst this_val, int argc, JSValueConst* argv) {
JSValue result = JS_UNDEFINED;
database_t* database = JS_GetOpaque(this_val, _database_class_id);
if (database) {
sqlite3_stmt* statement;
if (sqlite3_prepare(database->db, "SELECT key, value FROM properties WHERE id = ? AND KEY LIKE ?", -1, &statement, NULL) == SQLITE_OK) {
const char* pattern = JS_ToCString(context, argv[0]);
if (sqlite3_bind_text(statement, 1, database->id, -1, NULL) == SQLITE_OK &&
sqlite3_bind_text(statement, 2, pattern, -1, NULL) == SQLITE_OK) {
result = JS_NewObject(context);
while (sqlite3_step(statement) == SQLITE_ROW) {
JS_SetPropertyStr(
context,
result,
(const char*)sqlite3_column_text(statement, 0),
JS_NewStringLen(context, (const char*)sqlite3_column_text(statement, 1), sqlite3_column_bytes(statement, 1)));
}
}
JS_FreeCString(context, pattern);
sqlite3_finalize(statement);
}
}
return result;
}