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package database
import (
"log"
"database/sql"
_ "github.com/mattn/go-sqlite3"
)
type Migrator func(*sql.DB) (*sql.DB, error)
func AddFriends(dbConn *sql.DB) (*sql.DB, error) {
_, err := dbConn.Exec(`CREATE TABLE IF NOT EXISTS frens (
id TEXT PRIMARY KEY,
name TEXT
);`)
if err != nil {
return dbConn, err
}
log.Println("creating unique index on frens table")
_, err = dbConn.Exec(`CREATE UNIQUE INDEX IF NOT EXISTS idx_frens_name ON frens (name);`)
if err != nil {
return dbConn, err
}
return dbConn, nil
}
func AddMessages(dbConn *sql.DB) (*sql.DB, error) {
_, err := dbConn.Exec(`CREATE TABLE IF NOT EXISTS messages (
id TEXT PRIMARY KEY,
fren_id TEXT,
message TEXT,
time TIMESTAMP,
fren_sent BOOLEAN NOT NULL CHECK (fren_sent IN (0, 1)),
FOREIGN KEY (fren_id) REFERENCES frens (id) ON DELETE CASCADE
);`)
if err != nil {
return dbConn, err
}
log.Println("creating time and fren_id index on message table")
_, err = dbConn.Exec(`CREATE INDEX IF NOT EXISTS idx_message_timestamp ON messages (time);`)
_, err = dbConn.Exec(`CREATE INDEX IF NOT EXISTS idx_message_fren ON messages (fren_id);`)
if err != nil {
return dbConn, err
}
return dbConn, nil
}
func Migrate(dbConn *sql.DB) (*sql.DB, error) {
log.Println("migrating database")
migrations := []Migrator{
AddFriends,
AddMessages,
}
for _, migration := range migrations {
dbConn, err := migration(dbConn)
if err != nil {
return dbConn, err
}
}
return dbConn, nil
}
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