101 lines
3.1 KiB
Go
101 lines
3.1 KiB
Go
package database
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import (
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"database/sql"
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"fmt"
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"log"
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_ "github.com/mattn/go-sqlite3"
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)
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func InitDB(db *sql.DB) {
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schema := `
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CREATE TABLE IF NOT EXISTS currencies (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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code TEXT NOT NULL UNIQUE,
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name TEXT NOT NULL
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);
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CREATE TABLE IF NOT EXISTS companies (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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name TEXT NOT NULL UNIQUE,
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shares_outstanding INTEGER NOT NULL,
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price REAL NOT NULL,
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currency_id INTEGER NOT NULL,
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FOREIGN KEY (currency_id) REFERENCES currencies(id)
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);
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CREATE TABLE IF NOT EXISTS periods (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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type TEXT NOT NULL CHECK(type IN ('Q', 'H', 'Y')),
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year INTEGER NOT NULL,
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idx INTEGER NOT NULL,
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start_date TEXT NOT NULL,
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end_date TEXT NOT NULL,
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UNIQUE(type, year, idx)
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);
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CREATE TABLE IF NOT EXISTS category (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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company_id INTEGER NOT NULL,
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parent_id INTEGER,
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name TEXT NOT NULL,
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FOREIGN KEY (company_id) REFERENCES companies(id),
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FOREIGN KEY (parent_id) REFERENCES category(id),
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UNIQUE(company_id, name)
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);
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CREATE TABLE IF NOT EXISTS revenue_entries (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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company_id INTEGER NOT NULL,
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currency_id INTEGER NOT NULL,
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category_id INTEGER NOT NULL,
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period_id INTEGER NOT NULL,
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value REAL NOT NULL,
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FOREIGN KEY (company_id) REFERENCES companies(id),
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FOREIGN KEY (currency_id) REFERENCES currencies(id),
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FOREIGN KEY (category_id) REFERENCES category(id),
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FOREIGN KEY (period_id) REFERENCES periods(id),
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UNIQUE(company_id, category_id, period_id)
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);`
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if _, err := db.Exec(schema); err != nil {
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log.Fatal("Failed to create tables:", err)
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}
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fmt.Println("Tables ready")
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}
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func MigrateAddUniqueToRevenueEntries(db *sql.DB) error {
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steps := []string{
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// 1. copy existing data into a temp table with the new constraint
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`CREATE TABLE IF NOT EXISTS revenue_entries_new (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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company_id INTEGER NOT NULL,
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currency_id INTEGER NOT NULL,
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category_id INTEGER NOT NULL,
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period_id INTEGER NOT NULL,
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value REAL NOT NULL,
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FOREIGN KEY (company_id) REFERENCES companies(id),
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FOREIGN KEY (currency_id) REFERENCES currencies(id),
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FOREIGN KEY (category_id) REFERENCES category(id),
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FOREIGN KEY (period_id) REFERENCES periods(id),
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UNIQUE(company_id, category_id, period_id)
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)`,
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// 2. copy data over
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`INSERT OR IGNORE INTO revenue_entries_new
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SELECT id, company_id, currency_id, category_id, period_id, value
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FROM revenue_entries`,
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// 3. drop old table
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`DROP TABLE revenue_entries`,
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// 4. rename new table
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`ALTER TABLE revenue_entries_new RENAME TO revenue_entries`,
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}
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for _, step := range steps {
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if _, err := db.Exec(step); err != nil {
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return fmt.Errorf("migration failed: %w", err)
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}
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}
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return nil
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}
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