Initial commit

Created basic application design and data schemas.

db/createChainDatabase.sql

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+CREATE DATABASE IF NOT EXISTS chain;
+USE chain;
+CREATE TABLE IF NOT EXISTS blocks(
+    rowId INT PRIMARY KEY AUTO INCREMENT,
+    blockId VARCHAR(32) UNIQUE NOT NULL,
+    blockHash VARCHAR(64) UNIQUE NOT NULL,
+    previousHash VARCHAR(64) UNIQUE NOT NULL,
+    timestamp DATETIME NOT NULL,
+    height INT UNIQUE NOT NULL,
+    nonce INT NOT NULL
+);
+CREATE TABLE IF NOT EXISTS cards(
+    rowId INT PRIMARY KEY AUTO INCREMENT,
+    cardId VARCHAR(32) UNIQUE NOT NULL,
+    pageId INT NOT NULL,
+    FOREIGN KEY (blockId) REFERENCES blocks(blockId)
+);
+CREATE TABLE IF NOT EXISTS transactions(
+    rowId INT PRIMARY KEY AUTO INCREMENT,
+    transactionId VARCHAR(32) UNIQUE NOT NULL,
+    timestamp DATETIME NOT NULL,
+    receiver VARCHAR(128) NOT NULL,
+    isPending BOOLEAN NOT NULL DEFAULT true,
+    isAbandoned BOOLEAN NOT NULL DEFAULT false,
+    FOREIGN KEY (blockId) REFERENCES blocks(blockId),
+    FOREIGN KEY (cardId) REFERENCES cards(cardId)
+);
+CREATE TABLE IF NOT EXISTS peers(
+    peerId INT PRIMARY KEY AUTO INCREMENT,
+    baseUrl VARCHAR(128) UNIQUE NOT NULL,
+    isUp BOOLEAN NOT NULL,
+    downCount INT DEFAULT 0,
+    lastTry TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
+);

db/createMarketDatabase.sql

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+CREATE DATABASE IF NOT EXISTS market;
+USE market;
+CREATE TABLE IF NOT EXISTS users(
+    rowId INT PRIMARY KEY AUTO INCREMENT,
+    userId VARCHAR(36) UNIQUE NOT NULL,
+    userName VARCHAR(64) UNIQUE NOT NULL,
+    passwordHash VARCHAR(64) NOT NULL,
+    email VARCHAR(64) UNIQUE NOT NULL,
+    balance FLOAT NOT NULL DEFAULT 0,
+    public_key VARCHAR(128) NOT NULL
+);
+CREATE TABLE IF NOT EXISTS buyOrders(
+    rowId INT PRIMARY KEY AUTO INCREMENT,
+    buyOrderId VARCHAR(36) UNIQUE NOT NULL,
+    pageId INT NOT NULL,
+    price FLOAT NOT NULL,
+    volume INT NOT NULL,
+    fee FLOAT NOT NULL DEFAULT 0,
+    FOREIGN KEY (userId) REFERENCES users(userId)
+);
+CREATE TABLE IF NOT EXISTS sellOrders(
+    rowId INT PRIMARY KEY AUTO INCREMENT,
+    sellOrderId VARCHAR(36) UNIQUE NOT NULL,
+    price FLOAT NOT NULL,
+    fee FLOAT NOT NULL,
+    FOREIGN KEY (userId) REFERENCES users(userId)
+);
+CREATE TABLE IF NOT EXISTS sellOrdersItems(
+    rowId INT PRIMARY KEY AUTO INCREMENT,
+    cardId VARCHAR(36) NOT NULL,
+    FOREIGN KEY (sellOrderId) REFERENCES sellOrders(sellOrderId) NOT NULL,
+);
+CREATE TABLE IF NOT EXISTS transactions(
+    rowId INT PRIMARY KEY AUTO INCREMENT,
+    transactionId VARCHAR(36) UNIQUE NOT NULL,
+    isPending BOOLEAN NOT NULL DEFAULT true,
+    isAbandoned BOOLEAN NOT NULL DEFAULT false,
+    FOREIGN KEY (buyOrderId) REFERENCES buyOrders(buyOrderId) NOT NULL,
+    FOREIGN KEY (sellOrderId) REFERENCES sellOrders(sellOrderId) NOT NULL
+);

db/createPeersDatabase.sql

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+CREATE DATABASE IF NOT EXISTS peers;
+USE peers;
+CREATE TABLE IF NOT EXISTS peers

db/getBuyOrders.sql

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+SELECT buy_order_id
+FROM buy_orders
+JOIN cards
+ON buy_orders.title = cards.title
+WHERE title == desired_title
+AND price >= desired_price
+AND volume > (
+    SELECT count(*)
+    FROM transactions
+    WHERE buy_order_id == buy_order_id;
+)
+ORDER BY price DESC;

db/getSellOrders.sql

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+SELECT sell_orders.sell_order_id, sell_order_items.card_id
+FROM sell_orders
+JOIN sell_order_items
+ON sell_orders.sell_order_id = sell_order_items.sell_order_id
+WHERE price <= desired_price
+AND sell_order_items.card_id NOT IN (
+    SELECT card_id
+    FROM transactions
+    WHERE sell_order_id == sell_order_id;
+)
+ORDER BY price ASC;