Перенес файлы в общую папку

shared/database/.gitignore

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+node_modules/

shared/database/data/schema.sql

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+CREATE TABLE currency(
+    from_currency TEXT NOT NULL,
+    conv_currency TEXT NOT NULL,
+    rate FLOAT NOT NULL,
+    date DATE NOT NULL
+);

shared/database/package-lock.json

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+{
+  "name": "database",
+  "version": "1.0.0",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "database",
+      "version": "1.0.0",
+      "license": "GPL-3.0-or-later",
+      "dependencies": {
+        "pg": "^8.12.0",
+        "yaml": "^2.5.0"
+      }
+    },
+    "node_modules/pg": {
+      "version": "8.12.0",
+      "resolved": "https://registry.npmjs.org/pg/-/pg-8.12.0.tgz",
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+      "license": "MIT",
+      "dependencies": {
+        "pg-connection-string": "^2.6.4",
+        "pg-pool": "^3.6.2",
+        "pg-protocol": "^1.6.1",
+        "pg-types": "^2.1.0",
+        "pgpass": "1.x"
+      },
+      "engines": {
+        "node": ">= 8.0.0"
+      },
+      "optionalDependencies": {
+        "pg-cloudflare": "^1.1.1"
+      },
+      "peerDependencies": {
+        "pg-native": ">=3.0.1"
+      },
+      "peerDependenciesMeta": {
+        "pg-native": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/pg-cloudflare": {
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+      "resolved": "https://registry.npmjs.org/pg-cloudflare/-/pg-cloudflare-1.1.1.tgz",
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+      "license": "MIT",
+      "optional": true
+    },
+    "node_modules/pg-connection-string": {
+      "version": "2.6.4",
+      "resolved": "https://registry.npmjs.org/pg-connection-string/-/pg-connection-string-2.6.4.tgz",
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+      "license": "MIT"
+    },
+    "node_modules/pg-int8": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/pg-int8/-/pg-int8-1.0.1.tgz",
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+      "license": "ISC",
+      "engines": {
+        "node": ">=4.0.0"
+      }
+    },
+    "node_modules/pg-pool": {
+      "version": "3.6.2",
+      "resolved": "https://registry.npmjs.org/pg-pool/-/pg-pool-3.6.2.tgz",
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+      "license": "MIT",
+      "peerDependencies": {
+        "pg": ">=8.0"
+      }
+    },
+    "node_modules/pg-protocol": {
+      "version": "1.6.1",
+      "resolved": "https://registry.npmjs.org/pg-protocol/-/pg-protocol-1.6.1.tgz",
+      "integrity": "sha512-jPIlvgoD63hrEuihvIg+tJhoGjUsLPn6poJY9N5CnlPd91c2T18T/9zBtLxZSb1EhYxBRoZJtzScCaWlYLtktg==",
+      "license": "MIT"
+    },
+    "node_modules/pg-types": {
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/pg-types/-/pg-types-2.2.0.tgz",
+      "integrity": "sha512-qTAAlrEsl8s4OiEQY69wDvcMIdQN6wdz5ojQiOy6YRMuynxenON0O5oCpJI6lshc6scgAY8qvJ2On/p+CXY0GA==",
+      "license": "MIT",
+      "dependencies": {
+        "pg-int8": "1.0.1",
+        "postgres-array": "~2.0.0",
+        "postgres-bytea": "~1.0.0",
+        "postgres-date": "~1.0.4",
+        "postgres-interval": "^1.1.0"
+      },
+      "engines": {
+        "node": ">=4"
+      }
+    },
+    "node_modules/pgpass": {
+      "version": "1.0.5",
+      "resolved": "https://registry.npmjs.org/pgpass/-/pgpass-1.0.5.tgz",
+      "integrity": "sha512-FdW9r/jQZhSeohs1Z3sI1yxFQNFvMcnmfuj4WBMUTxOrAyLMaTcE1aAMBiTlbMNaXvBCQuVi0R7hd8udDSP7ug==",
+      "license": "MIT",
+      "dependencies": {
+        "split2": "^4.1.0"
+      }
+    },
+    "node_modules/postgres-array": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/postgres-array/-/postgres-array-2.0.0.tgz",
+      "integrity": "sha512-VpZrUqU5A69eQyW2c5CA1jtLecCsN2U/bD6VilrFDWq5+5UIEVO7nazS3TEcHf1zuPYO/sqGvUvW62g86RXZuA==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=4"
+      }
+    },
+    "node_modules/postgres-bytea": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/postgres-bytea/-/postgres-bytea-1.0.0.tgz",
+      "integrity": "sha512-xy3pmLuQqRBZBXDULy7KbaitYqLcmxigw14Q5sj8QBVLqEwXfeybIKVWiqAXTlcvdvb0+xkOtDbfQMOf4lST1w==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
+    "node_modules/postgres-date": {
+      "version": "1.0.7",
+      "resolved": "https://registry.npmjs.org/postgres-date/-/postgres-date-1.0.7.tgz",
+      "integrity": "sha512-suDmjLVQg78nMK2UZ454hAG+OAW+HQPZ6n++TNDUX+L0+uUlLywnoxJKDou51Zm+zTCjrCl0Nq6J9C5hP9vK/Q==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
+    "node_modules/postgres-interval": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/postgres-interval/-/postgres-interval-1.2.0.tgz",
+      "integrity": "sha512-9ZhXKM/rw350N1ovuWHbGxnGh/SNJ4cnxHiM0rxE4VN41wsg8P8zWn9hv/buK00RP4WvlOyr/RBDiptyxVbkZQ==",
+      "license": "MIT",
+      "dependencies": {
+        "xtend": "^4.0.0"
+      },
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
+    "node_modules/split2": {
+      "version": "4.2.0",
+      "resolved": "https://registry.npmjs.org/split2/-/split2-4.2.0.tgz",
+      "integrity": "sha512-UcjcJOWknrNkF6PLX83qcHM6KHgVKNkV62Y8a5uYDVv9ydGQVwAHMKqHdJje1VTWpljG0WYpCDhrCdAOYH4TWg==",
+      "license": "ISC",
+      "engines": {
+        "node": ">= 10.x"
+      }
+    },
+    "node_modules/xtend": {
+      "version": "4.0.2",
+      "resolved": "https://registry.npmjs.org/xtend/-/xtend-4.0.2.tgz",
+      "integrity": "sha512-LKYU1iAXJXUgAXn9URjiu+MWhyUXHsvfp7mcuYm9dSUKK0/CjtrUwFAxD82/mCWbtLsGjFIad0wIsod4zrTAEQ==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=0.4"
+      }
+    },
+    "node_modules/yaml": {
+      "version": "2.5.0",
+      "resolved": "https://registry.npmjs.org/yaml/-/yaml-2.5.0.tgz",
+      "integrity": "sha512-2wWLbGbYDiSqqIKoPjar3MPgB94ErzCtrNE1FdqGuaO0pi2JGjmE8aW8TDZwzU7vuxcGRdL/4gPQwQ7hD5AMSw==",
+      "license": "ISC",
+      "bin": {
+        "yaml": "bin.mjs"
+      },
+      "engines": {
+        "node": ">= 14"
+      }
+    }
+  }
+}

shared/database/package.json

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+{
+  "name": "database",
+  "version": "1.0.0",
+  "main": "src/postgresql.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/Redume/Kekkai.git"
+  },
+  "author": "Redume",
+  "license": "GPL-3.0-or-later",
+  "bugs": {
+    "url": "https://github.com/Redume/Kekkai/issues"
+  },
+  "homepage": "https://github.com/Redume/Kekkai#readme",
+  "description": "Database management service",
+  "dependencies": {
+    "pg": "^8.12.0",
+    "yaml": "^2.5.0"
+  }
+}

shared/database/src/main.js

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+const pool = require('./postgresql.js');
+const logger = require('../../logger/src/main.js');
+
+/**
+ * Getting the currency exchange rate for a specific day
+ * @param from_currency {String}
+ * @param conv_currency {String}
+ * @param date
+ * @returns {Promise<*|Error>}
+ */
+
+async function getDay(from_currency, conv_currency, date) {
+    if (!from_currency || !conv_currency) return new Error('fromCurrency and convCurrency are required');
+    else if (!date) return new Error('date is required')
+
+    const data = await pool.query('SELECT from_currency, conv_currency, date, rate FROM currency ' +
+        'WHERE from_currency = $1 AND conv_currency = $2 AND date = $3', [
+            from_currency.toUpperCase(),
+            conv_currency.toUpperCase(),
+            date
+        ]);
+
+    if (!data) return new Error('Missing data');
+
+    let set_date = data['rows'][0]['date']
+    set_date = new Date(set_date.setDate(set_date.getDate() + 1));
+
+    logger.debug(data['rows'][0])
+
+    return data['rows'][0];
+}
+
+/**
+ * Getting the exchange rate for a certain period
+ * @param {String} from_currency - The currency that is being converted
+ * @param {String} conv_currency - The currency to be converted into
+ * @param {String} start_date - Start date of the period
+ * @param {String} end_date - End date of the period
+ * @returns {Promise<*|Error>}
+ */
+
+async function getPeriod(from_currency, conv_currency, start_date, end_date) {
+    if (!from_currency || !conv_currency) return new Error('from_currency and conv_currency are required');
+    else if(!start_date || !end_date) return new Error('start_date and end_date are required')
+
+    const data = await pool.query('SELECT * FROM currency WHERE ' +
+        '(date BETWEEN $3 AND $4) AND from_currency = $1 AND conv_currency = $2 ORDER BY date', [
+            from_currency.toUpperCase(),
+            conv_currency.toUpperCase(),
+            start_date,
+            end_date
+    ]);
+
+    if (!data) return new Error('Missing data');
+
+    for (let i = 0; i < data['rows'].length; i++) {
+        let date = data['rows'][i]['date']
+        date = new Date(date.setDate(date.getDate() + 1));
+    }
+
+    logger.debug(data['rows'])
+
+    return data['rows'];
+}
+
+module.exports = { getDay, getPeriod };

shared/database/src/postgresql.js

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+const pg = require("pg");
+const config = require("../../config/src/main.js")();
+
+const pool = new pg.Pool({
+    user:  config['database']['user'],
+    password: config['database']['password'],
+    host: config['database']['host'],
+    port: config['database']['port'],
+    database: config['database']['name']
+});
+
+
+module.exports = pool;