1 files changed, 108 insertions, 0 deletions
diff --git a/cmd/cetus/apod.go b/cmd/cetus/apod.go
new file mode 100644
index 0000000..b99d899
--- /dev/null
+++ b/cmd/cetus/apod.go
@@ -0,0 +1,108 @@
+package main
+
+import (
+	"fmt"
+	"io/ioutil"
+	"os"
+
+	"framagit.org/andinus/cetus/pkg/apod"
+	"framagit.org/andinus/cetus/pkg/background"
+)
+
+func execAPOD() {
+	// reqInfo holds all the parameters that needs to be sent with
+	// the request. GetJson() will pack apiKey & date in params
+	// map before sending it to another function. Adding params
+	// here will not change the behaviour of the function, changes
+	// have to be made in GetJson() too.
+	reqInfo := make(map[string]string)
+	reqInfo["api"] = string(*apodAPI)
+	reqInfo["apiKey"] = string(*apodKey)
+	reqInfo["date"] = string(*apodDate)
+
+	if *apodRand {
+		reqInfo["date"] = apod.RandDate()
+	}
+
+	cacheDir := fmt.Sprintf("%s/%s", getCacheDir(), "apod")
+	os.MkdirAll(cacheDir, os.ModePerm)
+
+	// Check if the file is available locally, if it is then don't
+	// download it again and get it from disk
+	var body string
+	file := fmt.Sprintf("%s/%s", cacheDir, reqInfo["date"])
+	if _, err := os.Stat(file); err == nil {
+		data, err := ioutil.ReadFile(file)
+		chkErr(err)
+		body = string(data)
+	} else if os.IsNotExist(err) {
+		body, err = apod.GetJson(reqInfo)
+		chkErr(err)
+
+		// Write body to the cache so that it can be read
+		// later
+		err = ioutil.WriteFile(file, []byte(body), 0644)
+		chkErr(err)
+	} else {
+		chkErr(err)
+	}
+
+	if *apodDump {
+		fmt.Printf(body)
+		os.Exit(0)
+	}
+
+	res := apod.Res{}
+	err := apod.UnmarshalJson(&res, body)
+	chkErr(err)
+
+	// res.Msg will be returned when there is error on user input
+	// or the api server.
+	if len(res.Msg) != 0 {
+		fmt.Printf("Message: %s", res.Msg)
+		os.Exit(1)
+	}
+
+	// If path-only is passed then it will only print the path,
+	// even if quiet is passed. If the user wants the program to
+	// be quiet then path-only shouldn't be passed. If path-only
+	// is not passed & quiet is also not passed then print the
+	// response.
+	//
+	// Path is only printed when the media type is an image
+	// because res.HDURL is empty on non image media type.
+	if *apodPathOnly {
+		fmt.Println(res.HDURL)
+	} else if !*apodQuiet {
+		apod.Print(res)
+	}
+
+	// Proceed only if the command was set because if it was fetch
+	// then it's already finished & should exit now.
+	if os.Args[1] == "fetch" {
+		os.Exit(0)
+	}
+
+	// Try to set background only if the media type is an image.
+	// First it downloads the image to the cache directory and
+	// then tries to set it with feh. If the download fails then
+	// it exits with a non-zero exit code.
+	if res.MediaType != "image" {
+		os.Exit(0)
+	}
+	imgCacheDir := fmt.Sprintf("%s/%s", cacheDir, "background")
+	os.MkdirAll(imgCacheDir, os.ModePerm)
+	imgFile := fmt.Sprintf("%s/%s", imgCacheDir, reqInfo["date"])
+
+	// Check if the file is available locally, if it is
+	// then don't download it again and set it from disk
+	if _, err := os.Stat(imgFile); os.IsNotExist(err) {
+		err = background.Download(imgFile, res.HDURL)
+		chkErr(err)
+	} else {
+		chkErr(err)
+	}
+
+	err = background.Set(imgFile)
+	chkErr(err)
+}