/
main.go
170 lines (153 loc) · 3.86 KB
/
main.go
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package main
//go:generate pkger
import (
"github.com/labstack/echo"
"github.com/labstack/echo/middleware"
"github.com/markbates/pkger"
"github.com/swedishborgie/starlamp/lightctl"
"io/ioutil"
"log"
"net/http"
"net/url"
"os"
"strings"
"time"
)
var state = State{
AwakeTime: "07:00:00",
AsleepTime: "18:00:00",
AwakeColor: lightctl.LightStateGreen,
AsleepColor: lightctl.LightStateBlue,
}
func main() {
reset()
startTicker()
server := echo.New()
server.Use(middleware.CORS())
server.GET("/", func(c echo.Context) error {
idx, err := pkger.Open("/html/index.html")
if err != nil {
return err
}
body, err := ioutil.ReadAll(idx)
if err != nil {
return err
}
return c.HTML(http.StatusOK, string(body))
})
server.GET("/status", getStatus)
server.POST("/status", setStatus)
server.POST("/reset", resetColor)
server.GET("/*", getStaticAsset)
pkger.Include("/html")
log.Fatalf("failed to start server: %s", server.Start(":80"))
}
func startTicker() {
ticker := time.NewTicker(time.Second)
go func() {
for {
select {
case now := <-ticker.C:
// If we're on a new day, we need to recalculate times.
if now.Day() != state.NextAwakeTime.Day() {
if err := recalculate(); err != nil {
log.Printf("problem recalculating times: %s", err)
}
} else {
recalculateState()
}
}
}
}()
}
func getStaticAsset(c echo.Context) error {
filePath := url.PathEscape(c.Param("*"))
file, err := pkger.Open("/html/" + filePath)
if err == os.ErrNotExist {
return c.NoContent(http.StatusNotFound)
}
return c.Stream(http.StatusOK, getMimeType(filePath), file)
}
func getMimeType(filePath string) string {
filePath = strings.ToLower(filePath)
if strings.HasSuffix(filePath, ".png") {
return "image/png"
} else if strings.HasSuffix(filePath, ".jpg") {
return "image/png"
} else if strings.HasSuffix(filePath, ".htm") || strings.HasSuffix(filePath, ".html") {
return "text/html"
} else if strings.HasSuffix(filePath, ".css") {
return "text/css"
} else if strings.HasSuffix(filePath, ".js") {
return "application/javascript"
}
return "application/octet-stream"
}
func reset() {
lightctl.Reset()
state.CurrentState = StateUnknown
// Figure out sleep states
if err := recalculate(); err != nil {
log.Fatalf("problem calculating times: %s", err)
}
state.CurrentColor = lightctl.GetState()
}
func getStatus(c echo.Context) error {
return c.JSON(http.StatusOK, state)
}
func setStatus(c echo.Context) error {
if err := c.Bind(&state); err != nil {
return err
}
color := state.CurrentColor
if err := recalculate(); err != nil {
return err
}
if color != lightctl.GetState() {
lightctl.SetState(color)
state.CurrentColor = color
}
return c.JSON(http.StatusOK, state)
}
func resetColor(c echo.Context) error {
reset()
return c.NoContent(http.StatusOK)
}
func recalculate() error {
if err := recalculateTimes(); err != nil {
return err
}
recalculateState()
return nil
}
func recalculateState() {
now := time.Now()
oldState := state.CurrentState
if now.Before(state.NextAwakeTime) || now.After(state.NextAsleepTime) {
state.CurrentState = StateAsleep
} else {
state.CurrentState = StateAwake
}
//If the state changed, changed the color
if oldState != state.CurrentState {
if state.CurrentState == StateAwake {
lightctl.SetState(state.AwakeColor)
} else {
lightctl.SetState(state.AsleepColor)
}
}
}
func recalculateTimes() error {
awake, err := time.Parse("15:04:05", state.AwakeTime)
if err != nil {
return err
}
asleep, err := time.Parse("15:04:05", state.AsleepTime)
if err != nil {
return err
}
now := time.Now()
state.NextAwakeTime = time.Date(now.Year(), now.Month(), now.Day(), awake.Hour(), awake.Minute(), awake.Second(), 0, time.Local)
state.NextAsleepTime = time.Date(now.Year(), now.Month(), now.Day(), asleep.Hour(), asleep.Minute(), asleep.Second(), 0, time.Local)
return nil
}