102 lines
2.2 KiB
Go
102 lines
2.2 KiB
Go
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package app
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import (
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"net/http"
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"sync"
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"github.com/caarlos0/env"
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"github.com/jmoiron/sqlx"
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"bitmask.me/skeleton/assets"
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"bitmask.me/skeleton/internal/database"
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"bitmask.me/skeleton/internal/storage"
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"bitmask.me/skeleton/internal/templates"
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)
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// Config contains all neccessary configuration for the App
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type Config struct {
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DatabaseDSN string `env:"DATABASE_DSN"`
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S3Key string `env:"S3_KEY"`
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S3Secret string `env:"S3_SECRET"`
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S3Location string `env:"S3_LOCATION"`
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S3Endpoint string `env:"S3_ENDPOINT"`
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S3SSL bool `env:"S3_SSL"`
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S3Bucket string `env:"S3_BUCKET"`
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}
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// ConfigFromEnv loads the configuration from environment variables
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func ConfigFromEnv() *Config {
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config := &Config{}
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env.Parse(config)
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return config
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}
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// App contains the dependencies for this application.
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type App struct {
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config *Config
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Files http.FileSystem
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database *sqlx.DB
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// guard for lazy initialization of s3 client
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storageOnce sync.Once
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storage *storage.Client
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// guard for lazy template loading
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templatesOnce sync.Once
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templates templates.Templates
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}
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func (c *App) Templates() templates.Templates {
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c.templatesOnce.Do(func() {
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c.templates = templates.LoadTemplatesFS(c.Files, "/templates")
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})
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return c.templates
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}
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func (c *App) Storage() *storage.Client {
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c.storageOnce.Do(func() {
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// ignore error since we will handle the nonfunctional client
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// later down the line.
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c.storage, _ = storage.New(&storage.Config{
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Key: c.config.S3Key,
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Secret: c.config.S3Secret,
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Location: c.config.S3Location,
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Endpoint: c.config.S3Endpoint,
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SSL: c.config.S3SSL,
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Bucket: c.config.S3Bucket,
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})
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})
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return c.storage
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}
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func (c *App) Database() *sqlx.DB {
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return c.database
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}
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// NewContext creates a new App from a config
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func New(config *Config) *App {
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context := &App{
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config: config,
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Files: assets.Assets,
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}
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initialize(context)
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return context
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}
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func initialize(app *App) {
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var err error
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app.database, err = database.New(app.config.DatabaseDSN)
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if err != nil {
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// Since we are not sending any data yet, any error occuring here
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// is likely result of a missing driver or wrong parameters.
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panic(err)
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}
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if err != nil {
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panic(err)
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}
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}
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