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package main
import (
"fmt"
"log"
"os"
"github.com/gomodule/redigo/redis"
"gopkg.in/yaml.v3"
"riedstra.dev/mitch/go-website/mapcache"
"riedstra.dev/mitch/go-website/page"
)
var FeedPrefixDefault = ".feeds"
type App struct {
mapCache bool
redisPool *redis.Pool
RedisKey string
cache *mapcache.Cache
ReIndexPath string
StaticDirectory string
BaseTemplate string
TemplateDirectory string
DocumentSplit string
Suffix string
// Related to user authentication
auth *Auth
// Related to the Atom feed
Title string
Description string // aka, "subtitle"
Author Author
SiteURL string
FeedId string //nolint
Updated page.PageTime
FeedPrefix string
}
func newApp() *App {
return &App{}
}
func loadConf(fn string) (*App, error) {
fh, err := os.Open(fn)
if err != nil {
return nil, fmt.Errorf("loading config: %w", err)
}
dec := yaml.NewDecoder(fh)
app := newApp()
err = dec.Decode(app)
if err != nil {
return nil, fmt.Errorf("decoding yaml: %w", err)
}
if app.StaticDirectory == "" {
app.StaticDirectory = "static"
}
if app.FeedPrefix == "" {
app.FeedPrefix = FeedPrefixDefault
}
if app.BaseTemplate != "" {
page.BaseTemplate = app.BaseTemplate
}
if app.TemplateDirectory != "" {
page.TemplateDirectory = app.TemplateDirectory
}
if app.DocumentSplit != "" {
page.DocumentSplit = app.DocumentSplit
}
if app.Suffix != "" {
page.Suffix = app.Suffix
}
page.Global = map[string]interface{}{
"App": app,
}
return app, nil
}
func (a *App) ClearCache() error {
if a.redisPool != nil {
return a.ClearRedis()
}
a.cache.Clear()
return nil
}
// ClearRedis is a little helper function that allows us to easily clear
// the redis cache at runtime.
func (a *App) ClearRedis() error {
if a.redisPool == nil {
return nil
}
client := a.redisPool.Get()
defer client.Close()
_, err := client.Do("DEL", a.RedisKey)
if err != nil {
log.Println("Encountered error clearing redis cache: ", err)
}
return fmt.Errorf("clearing redis: %w", err)
}
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