Major Refactoring

- Move components to separate packages
- Fix HTTP header for 401 response
- Add documentation

util/config.go

@@ -0,0 +1,48 @@
+package util
+
+import (
+	"log"
+	"os"
+	"path/filepath"
+
+	"gitlab.hamburg.ccc.de/ccchh/spaceapid/config"
+)
+
+const (
+	envBAUsername       = "BA_USERNAME"
+	envBAPassword       = "BA_PASSWORD"
+	envJSONTemplatePath = "JSON_TEMPLATE_PATH"
+)
+
+// GetConfiguration gets the spaceapid configuration from the respective environment variables
+func GetConfiguration() (c config.Configuration) {
+	var (
+		success bool
+		err     error
+	)
+
+	// HTTP BasicAuth username
+	c.BAUsername, success = os.LookupEnv(envBAUsername)
+	if !success || c.BAUsername == "" {
+		log.Fatalln("Could not retrieve env variable", envBAUsername, "or variable is empty")
+	}
+
+	// HTTP BasicAuth password
+	c.BAPassword, success = os.LookupEnv(envBAPassword)
+	if !success || c.BAPassword == "" {
+		log.Fatalln("Could not retrieve", envBAPassword, "env variable or variable is empty")
+	}
+
+	// JSON template path
+	templatePath, success := os.LookupEnv(envJSONTemplatePath)
+	if !success || templatePath == "" {
+		log.Fatalln("Could not retrieve", envJSONTemplatePath, "env variable or variable is empty")
+	}
+	// Save as absolute path
+	c.TemplatePath, err = filepath.Abs(templatePath)
+	if err != nil {
+		log.Fatalln("Failed converting", templatePath, "to absolute path:", err)
+	}
+
+	return
+}

util/util.go

@@ -0,0 +1,36 @@
+package util
+
+import (
+	"bytes"
+	"encoding/json"
+	"log"
+	"os"
+	"slices"
+
+	"gitlab.hamburg.ccc.de/ccchh/spaceapid/types"
+)
+
+// ParseTemplate parses the given file and
+func ParseTemplate(file string) (resp types.SpaceAPIResponseV14) {
+
+	// Read template file
+	template, err := os.ReadFile(file)
+	if err != nil {
+		log.Fatalln("Failed reading file:", err)
+	}
+
+	// Parse JSON
+	dec := json.NewDecoder(bytes.NewReader(template))
+	dec.DisallowUnknownFields()
+	err = dec.Decode(&resp)
+	if err != nil {
+		log.Fatalln("Could not parse SpaceAPI response template:", err)
+	}
+
+	// Check if compatible with v14
+	if !slices.Contains(resp.APICompatibility, "14") {
+		log.Fatalln("Provided template doesn't specify compatibility with API version 14")
+	}
+
+	return
+}