1 files changed, 135 insertions, 0 deletions
diff --git a/cmd/cetus/bpod.go b/cmd/cetus/bpod.go
new file mode 100644
index 0000000..f308d47
--- /dev/null
+++ b/cmd/cetus/bpod.go
@@ -0,0 +1,135 @@
+package main
+
+import (
+	"fmt"
+	"io/ioutil"
+	"os"
+	"time"
+
+	"framagit.org/andinus/cetus/pkg/background"
+	"framagit.org/andinus/cetus/pkg/bpod"
+)
+
+func execBPOD() {
+	// 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(*bpodAPI)
+
+	if *bpodRand {
+		reqInfo["random"] = "true"
+	}
+
+	cacheDir := fmt.Sprintf("%s/%s", getCacheDir(), "bpod")
+	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.
+	//
+	// We don't know the bpod date because that will be there in
+	// response & we can't read the response without requesting
+	// it. So this will assume the bpod date to be today's date if
+	// *bpodRand is not set true. If *bpodRand is set true then we
+	// can't assume the date. Also this way too it can cause error
+	// if our assumed date doesn't matches date at the server.
+	var body string
+	var file string
+	var err error
+
+	if !*bpodRand {
+		// If not *bpodRand and the file exists then read from
+		// disk, if the file doesn't exist then get it and
+		// save it to disk.
+		file = fmt.Sprintf("%s/%s", cacheDir, time.Now().UTC().Format("2006-01-02"))
+		if _, err := os.Stat(file); err == nil {
+			data, err := ioutil.ReadFile(file)
+			chkErr(err)
+			body = string(data)
+		} else if os.IsNotExist(err) {
+			body, err = bpod.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)
+		}
+	} else {
+		// If *bpodRand then get the file and save it to disk
+		// after unmarshal because we don't know the file name
+		// yet
+		body, err = bpod.GetJson(reqInfo)
+		chkErr(err)
+	}
+
+	// Unmarshal before dump because otherwise if we come across
+	// the date for the first time then it would just dump and
+	// exit without saving it to cache. This way we first save it
+	// to cache if *bpodRand is true.
+	res, err := bpod.UnmarshalJson(body)
+	chkErr(err)
+
+	// Correct format
+	res.Url = fmt.Sprintf("%s%s", "https://www.bing.com", res.Url)
+	dt, err := time.Parse("20060102", res.StartDate)
+	chkErr(err)
+	res.StartDate = dt.Format("2006-01-02")
+
+	file = fmt.Sprintf("%s/%s", cacheDir, res.StartDate)
+	if *bpodRand {
+		// Write body to the cache so that it can be read
+		// later
+		err = ioutil.WriteFile(file, []byte(body), 0644)
+		chkErr(err)
+	}
+
+	if *bpodDump {
+		fmt.Printf(body)
+		os.Exit(0)
+	}
+
+	// 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 *bpodPathOnly {
+		fmt.Println(res.Url)
+	} else if !*bpodQuiet {
+		bpod.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.
+	imgCacheDir := fmt.Sprintf("%s/%s", cacheDir, "background")
+	os.MkdirAll(imgCacheDir, os.ModePerm)
+	imgFile := fmt.Sprintf("%s/%s", imgCacheDir, res.StartDate)
+
+	// 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.Url)
+		chkErr(err)
+	} else {
+		chkErr(err)
+	}
+
+	err = background.Set(imgFile)
+	chkErr(err)
+}