WIP

.gitignore

@@ -0,0 +1 @@
+/challenge

README.md

@@ -1,3 +1,11 @@
+# Usage
+
+```bash
+LOG_LEVEL=debug go run .
+```
+
+# Original Readme
+
 ## Challenge1 - Work with APIs and Libraries
 ### Objectives
 

go.mod

@@ -0,0 +1,8 @@
+module challenge
+
+go 1.19
+
+require (
+	github.com/sirupsen/logrus v1.9.0 // indirect
+	golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8 // indirect
+)

go.sum

@@ -0,0 +1,11 @@
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/sirupsen/logrus v1.9.0 h1:trlNQbNUG3OdDrDil03MCb1H2o9nJ1x4/5LYw7byDE0=
+github.com/sirupsen/logrus v1.9.0/go.mod h1:naHLuLoDiP4jHNo9R0sCBMtWGeIprob74mVsIT4qYEQ=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8 h1:0A+M6Uqn+Eje4kHMK80dtF3JCXC4ykBgQG4Fe06QRhQ=
+golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

main.go

@@ -0,0 +1,23 @@
+package main
+
+import (
+	log "github.com/sirupsen/logrus"
+	"os"
+)
+
+func init() {
+	log.SetFormatter(&log.JSONFormatter{})
+	log.SetOutput(os.Stdout)
+	desiredLogLevel := os.Getenv("LOG_LEVEL")
+	level, err := log.ParseLevel(desiredLogLevel)
+	if err != nil {
+		log.Errorf("Failed to parse log level: %s", desiredLogLevel)
+		log.SetLevel(log.InfoLevel)
+	} else {
+		log.SetLevel(level)
+	}
+}
+
+func main() {
+	_, _ = AllStarships()
+}

swapi.go

@@ -0,0 +1,96 @@
+package main
+
+import (
+	"encoding/json"
+	log "github.com/sirupsen/logrus"
+	"net/http"
+)
+
+const API_PREFIX = "https://swapi.dev/api"
+
+// Source: https://swapi.dev/documentation#people
+type Person struct {
+	Name string
+	// ... other fields unused by this application
+}
+
+// Source: https://swapi.dev/documentation#starships
+type Starship struct {
+	Name   string
+	Pilots []string // URLs to retrieve [People]
+	// ... other fields unused by this application
+}
+
+// Structs which may be retrieved in a paginated fasion from swapi.dev
+type Pageable interface {
+	Starship | Person
+}
+
+type Gettable interface {
+	Starship | Person
+}
+
+// Represents a single page of [Pageable] structs
+type PageOf[T Pageable] struct {
+	Count    uint
+	Next     *string
+	Previous *string
+	Results  []T
+}
+
+// Used for retrieving data from swapi.dev
+//
+//	resp, err := Get("/starships")
+//
+// If [path] does not start with "/", it assumes you have provided a full URL to
+// make following [PageOf]'s [Next] and [Previous] simpler.
+//
+//	resp, err := Get("https://git.lyte.dev/swagger.v1.json")
+func Get[T interface{}](path string, data *T) error {
+	var url string
+	if path[0] == '/' {
+		url = API_PREFIX + path
+	} else {
+		url = path
+	}
+	resp, err := http.Get(url)
+	if err != nil {
+		log.Errorf("Error GET'ing %s: %+v", url, err)
+	}
+	defer resp.Body.Close()
+	err = json.NewDecoder(resp.Body).Decode(data)
+	if err != nil {
+		log.Errorf("Failed to decode response JSON: %+v", err)
+	}
+	log.Debugf("GET %s: %+v", url, resp)
+	return err
+}
+
+func AllStarships() (*[]Starship, error) {
+	results := make([]Starship, 0)
+	var page PageOf[Starship]
+	var resp *http.Response
+
+	err := Get("/starships", &page)
+	if err != nil {
+		return &[]Starship{}, err
+	}
+	err = json.NewDecoder(resp.Body).Decode(&page)
+	log.Debugf("Page: %+v", page)
+	if err != nil {
+		log.Errorf("Error decoding response body: %+v", err)
+	}
+	results = append(results, page.Results...)
+
+	// TODO: loop
+	for page.Next != nil {
+		err := Get(*page.Next, &page)
+		log.Debugf("Page: %+v", page)
+		if err != nil {
+			return &[]Starship{}, err
+		}
+		json.NewDecoder(resp.Body).Decode(&page)
+		results = append(results, page.Results...)
+	}
+	return &results, nil
+}