rates

Documentation

Overview

Package rates retrieves and stores daily exchange rates.

Index

• type History
  • func (h *History) Options(date string, value float64) ([]Option, error)
  • func (h *History) RunDaemon() error
  • func (h *History) Synced() bool
• type Option
  • func (opt Option) Tr(l lang.Lang) string
• type SQLiteDB
  • func OpenDB(fpath string) (*SQLiteDB, error)
  • func (db *SQLiteDB) Get(date string) (map[string]float64, error)
  • func (db *SQLiteDB) Insert(date string, m map[string]float64) error
  • func (db *SQLiteDB) LatestDate() (string, error)

Types

type History

type History struct {
	Database    *SQLiteDB
	GetBuyRates func(lastUpdateDate string) (map[string]float64, error)
}

func (*History) Options

func (h *History) Options(date string, value float64) ([]Option, error)

Get tries the given date and four previous days.

func (*History) RunDaemon

func (h *History) RunDaemon() error

RunDaemon starts a loop which fetches the rates every hour and inserts them into the database. The function blocks.

func (*History) Synced

func (h *History) Synced() bool

Synced returns whether rates have been updated since four days ago.

type Option

type Option struct {
	Currency string // from GetBuyRates result
	Price    float64
}

func (Option) Tr

func (opt Option) Tr(l lang.Lang) string

ISO 4217

type SQLiteDB

type SQLiteDB struct {
	// contains filtered or unexported fields
}

func OpenDB

func OpenDB(fpath string) (*SQLiteDB, error)

func (*SQLiteDB) Get

func (db *SQLiteDB) Get(date string) (map[string]float64, error)

Get returns ErrNoRows if no data is found.

func (*SQLiteDB) Insert

func (db *SQLiteDB) Insert(date string, m map[string]float64) error

func (*SQLiteDB) LatestDate

func (db *SQLiteDB) LatestDate() (string, error)