158 lines
3.6 KiB
C++
158 lines
3.6 KiB
C++
#include "db_init.h"
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namespace db {
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int create_table_history(pqxx::connection& C) {
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std::string query;
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try {
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/* Create a transactional object. */
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pqxx::work W(C);
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/* Create sql query for history table creation */
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query = "CREATE TABLE IF NOT EXISTS HISTORY(" \
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"ID SERIAL PRIMARY KEY NOT NULL," \
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"COIN CHAR(32) NOT NULL,"\
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"TYPE INT,"\
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"USERID CHAR(128) NOT NULL,"\
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"QUANTITY INT,"\
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"TIMESTAMP BIGINT NOT NULL,"\
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"COMPLETED BOOLEAN,"\
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"PRICE REAL);";
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/* Execute SQL query */
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W.exec( query );
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W.commit();
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} catch (const std::exception &e) {
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std::cerr << e.what() << std::endl;
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return 1;
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}
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return 0;
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}
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int create_table_coin_price(pqxx::connection& C) {
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std::string query;
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try {
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/* Create a transactional object. */
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pqxx::work W(C);
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/* Create sql query for history table creation */
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query = "CREATE TABLE IF NOT EXISTS COINPRICE(" \
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"COIN CHAR(32) PRIMARY KEY,"\
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"PRICE REAL," \
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"SALEVALUE REAL," \
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"INCIRCULATION INT, "\
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"LASTUPDATE BIGINT);";
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/* Execute SQL query */
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W.exec( query );
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W.commit();
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} catch (const std::exception &e) {
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std::cerr << e.what() << std::endl;
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return 1;
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}
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return 0;
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}
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int create_last_n_anchor_prices_function(pqxx::connection& C) {
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std::string query;
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try {
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/* Create a transactional object. */
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pqxx::work W(C);
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/* Create sql query for spaced prices function, delta is in seconds*/
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query = "CREATE OR REPLACE FUNCTION last_n_spaced_prices(var_coin CHAR(32), var_n INT, var_delta INT) RETURNS SETOF HISTORY AS $$" \
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"DECLARE "\
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" row HISTORY%ROWTYPE; "\
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" cur_date BIGINT = 9223372036854775806; "\
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" nb_dates INT = 0; "\
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" nb_dates_max INT = var_n; "\
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"BEGIN "\
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" FOR row IN "\
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" SELECT * "\
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" FROM HISTORY "\
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" WHERE HISTORY.COIN = var_coin "\
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" ORDER BY TIMESTAMP DESC "\
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" LOOP "\
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" IF nb_dates = nb_dates_max "\
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" THEN "\
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" EXIT; "\
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" END IF; "\
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" "\
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" IF row.TIMESTAMP <= cur_date - var_delta*1000 OR cur_date IS NULL "\
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" THEN "\
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" cur_date := row.TIMESTAMP; "\
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" nb_dates := nb_dates + 1; "\
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" RETURN NEXT row; "\
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" END IF; "\
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" END LOOP; "\
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"END; "\
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"$$ LANGUAGE plpgsql; ";
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/* Execute SQL query */
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W.exec( query );
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W.commit();
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} catch (const std::exception &e) {
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std::cerr << e.what() << std::endl;
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return 1;
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}
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return 0;
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}
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int create_table_users(pqxx::connection& C) {
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std::string query;
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try {
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/* Create a transactional object. */
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pqxx::work W(C);
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/* Create sql query for history table creation */
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query = "CREATE TABLE IF NOT EXISTS USERS(" \
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"USERID CHAR(128) PRIMARY KEY,"\
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"USERNAME TEXT NOT NULL,"\
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"ICON CHAR(32) NOT NULL,"\
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"NETWORTH REAL);";
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/* Execute SQL query */
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W.exec( query );
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W.commit();
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} catch (const std::exception &e) {
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std::cerr << e.what() << std::endl;
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return 1;
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}
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return 0;
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}
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int populate() {
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try {
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pqxx::connection C("dbname = nasfaq user = steaky \
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hostaddr = 127.0.0.1 port = 5432");
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if (C.is_open()) {
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std::cout << "Opened database successfully: " << C.dbname() << std::endl;
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} else {
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std::cout << "Can't open database" << std::endl;
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return 1;
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}
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/* Create tables. */
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create_table_history(C);
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create_table_coin_price(C);
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create_table_users(C);
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/* Create functions. */
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create_last_n_anchor_prices_function(C);
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} catch (const std::exception &e) {
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std::cerr << e.what() << std::endl;
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return 1;
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}
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return 0;
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}
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}
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