3 files changed, 92 insertions, 0 deletions
diff --git a/pkg/apod/json.go b/pkg/apod/json.go
new file mode 100644
index 0000000..4589925
--- /dev/null
+++ b/pkg/apod/json.go
@@ -0,0 +1,48 @@
+package apod
+
+import (
+	"encoding/json"
+	"fmt"
+	"regexp"
+
+	"framagit.org/andinus/cetus/pkg/cetus"
+)
+
+// Res holds the response from the api.
+type Res struct {
+	Copyright      string `json:"copyright"`
+	Date           string `json:"date"`
+	Explanation    string `json:"explanation"`
+	HDURL          string `json:"hdurl"`
+	MediaType      string `json:"media_type"`
+	ServiceVersion string `json:"service_version"`
+	Title          string `json:"title"`
+	URL            string `json:"url"`
+
+	Code int    `json:"code"`
+	Msg  string `json:"msg"`
+}
+
+// UnmarshalJson will take body as input & unmarshal it to res
+func UnmarshalJson(res *Res, body string) error {
+	err := json.Unmarshal([]byte(body), res)
+	if err != nil {
+		return fmt.Errorf("UnmarshalJson failed\n%s", err.Error())
+	}
+	return nil
+}
+
+// GetJson returns json response received from the api
+func GetJson(reqInfo map[string]string) (string, error) {
+	re := regexp.MustCompile("((19|20)\\d\\d)-(0?[1-9]|1[012])-(0?[1-9]|[12][0-9]|3[01])")
+	if !re.MatchString(reqInfo["date"]) {
+		return "", fmt.Errorf("%s does not match format 'YYYY-MM-DD'", reqInfo["date"])
+	}
+
+	params := make(map[string]string)
+	params["api_key"] = reqInfo["apiKey"]
+	params["date"] = reqInfo["date"]
+
+	body, err := cetus.GetRes(reqInfo["api"], params)
+	return string(body), err
+}
diff --git a/pkg/apod/print.go b/pkg/apod/print.go
new file mode 100644
index 0000000..a087665
--- /dev/null
+++ b/pkg/apod/print.go
@@ -0,0 +1,19 @@
+package apod
+
+import (
+	"fmt"
+)
+
+// Print will print the json output
+func Print(res Res) {
+	fmt.Printf("Title: %s\n\n", res.Title)
+	fmt.Printf("Copyright: %s\n", res.Copyright)
+	fmt.Printf("Date: %s\n\n", res.Date)
+	fmt.Printf("Media Type: %s\n", res.MediaType)
+	if res.MediaType == "image" {
+		fmt.Printf("URL: %s\n\n", res.HDURL)
+	} else {
+		fmt.Printf("URL: %s\n\n", res.URL)
+	}
+	fmt.Printf("Explanation: %s\n", res.Explanation)
+}
diff --git a/pkg/apod/rand.go b/pkg/apod/rand.go
new file mode 100644
index 0000000..cf92784
--- /dev/null
+++ b/pkg/apod/rand.go
@@ -0,0 +1,25 @@
+package apod
+
+import (
+	"math/rand"
+	"time"
+)
+
+// RandDate returns a random date between 1995-06-16 & today
+func RandDate() string {
+	var (
+		min   int64
+		max   int64
+		sec   int64
+		delta int64
+		date  string
+	)
+	min = time.Date(1995, 6, 16, 0, 0, 0, 0, time.UTC).Unix()
+	max = time.Now().UTC().Unix()
+	delta = max - min
+
+	sec = rand.Int63n(delta) + min
+	date = time.Unix(sec, 0).Format("2006-01-02")
+
+	return date
+}