Display problems that have not yet been submitted

CHANGELOG.md

@@ -13,6 +13,7 @@ The exercism CLI follows [semantic versioning](http://semver.org/).
 * [#153](https://github.com/exercism/cli/pull/153): Refactored configuration package - [@kytrinyx](https://github.com/kytrinyx)
 * [#154](https://github.com/exercism/cli/pull/154): Add 'list' command to list available exercises for a language - [@lcowell](https://github.com/lcowell)
 * [#157](https://github.com/exercism/cli/pull/157): Refactored API package - [@Tonkpils](https://github.com/Tonkpils)
+* [#155](https://github.com/exercism/cli/pull/155): Display problems not yet submitted on fetch API - [@Tonkpils](https://github.com/Tonkpils)
 * **Your contribution here**
 
 ## v1.9.2 (2015-01-11)

api/api.go

@@ -31,6 +31,12 @@ type PayloadSubmission struct {
 	PayloadError
 }
 
+// SubmissionInfo contains state information about a submission.
+type SubmissionInfo struct {
+	Slug  string `json:"slug"`
+	State string `json:"state"`
+}
+
 // Fetch retrieves problems from the API.
 // In most cases these problems consist of a test suite and a README
 // from the x-api, but it is also used when restoring earlier iterations.
@@ -62,7 +68,7 @@ func (c *Client) Fetch(args []string) ([]*Problem, error) {
 	}
 
 	if res.StatusCode != http.StatusOK {
-		return nil, fmt.Errorf(`unable to fetch problems (HTTP: %d) - %s`, res.StatusCode, payload.Error)
+		return nil, fmt.Errorf("unable to fetch problems (HTTP: %d) - %s", res.StatusCode, payload.Error)
 	}
 
 	return payload.Problems, nil
@@ -83,12 +89,28 @@ func (c *Client) Restore() ([]*Problem, error) {
 	}
 
 	if res.StatusCode != http.StatusOK {
-		return nil, fmt.Errorf(`unable to fetch problems (HTTP: %d) - %s`, res.StatusCode, payload.Error)
+		return nil, fmt.Errorf("unable to fetch problems (HTTP: %d) - %s", res.StatusCode, payload.Error)
 	}
 
 	return payload.Problems, nil
 }
 
+// Submissions gets a list of submitted exercises and their current acceptance state.
+func (c *Client) Submissions() (map[string][]SubmissionInfo, error) {
+	url := fmt.Sprintf("%s/api/v1/exercises?key=%s", c.APIHost, c.APIKey)
+	req, err := c.NewRequest("GET", url, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	var payload map[string][]SubmissionInfo
+	if _, err := c.Do(req, &payload); err != nil {
+		return nil, err
+	}
+
+	return payload, nil
+}
+
 // Download fetches a solution by submission key and writes it to disk.
 func (c *Client) Download(submissionID string) (*Submission, error) {
 	url := fmt.Sprintf("%s/api/v1/submissions/%s", c.APIHost, submissionID)
@@ -126,7 +148,7 @@ func (c *Client) Demo() ([]*Problem, error) {
 	}
 
 	if res.StatusCode != http.StatusOK {
-		return nil, fmt.Errorf(`unable to fetch problems (HTTP: %d) - %s`, res.StatusCode, payload.Error)
+		return nil, fmt.Errorf("unable to fetch problems (HTTP: %d) - %s", res.StatusCode, payload.Error)
 	}
 
 	return payload.Problems, nil
@@ -152,7 +174,7 @@ func (c *Client) Submit(iter *Iteration) (*Submission, error) {
 	}
 
 	if res.StatusCode != http.StatusCreated {
-		return nil, fmt.Errorf(`unable to submit (HTTP: %d) - %s`, res.StatusCode, ps.Error)
+		return nil, fmt.Errorf("unable to submit (HTTP: %d) - %s", res.StatusCode, ps.Error)
 	}
 
 	return ps.Submission, nil

api/problem.go

@@ -4,12 +4,13 @@ import "fmt"
 
 // Problem represents a specific problem in a given language track.
 type Problem struct {
-	ID       string            `json:"id"`
-	TrackID  string            `json:"track_id"`
-	Language string            `json:"language"`
-	Slug     string            `json:"slug"`
-	Name     string            `json:"name"`
-	Files    map[string]string `json:"files"`
+	ID        string            `json:"id"`
+	TrackID   string            `json:"track_id"`
+	Language  string            `json:"language"`
+	Slug      string            `json:"slug"`
+	Name      string            `json:"name"`
+	Files     map[string]string `json:"files"`
+	Submitted bool
 }
 
 func (p *Problem) String() string {

cmd/fetch.go

@@ -22,10 +22,32 @@ func Fetch(ctx *cli.Context) {
 		log.Fatal(err)
 	}
 
+	submissionInfo, err := client.Submissions()
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	if err := setSubmissionState(problems, submissionInfo); err != nil {
+		log.Fatal(err)
+	}
+
 	hw := user.NewHomework(problems, c)
 	if err := hw.Save(); err != nil {
 		log.Fatal(err)
 	}
 
-	hw.Summarize()
+	hw.Summarize(user.HWAll)
+}
+
+func setSubmissionState(problems []*api.Problem, submissionInfo map[string][]api.SubmissionInfo) error {
+	for _, problem := range problems {
+		langSubmissions := submissionInfo[problem.Language]
+		for _, submission := range langSubmissions {
+			if submission.Slug == problem.Slug {
+				problem.Submitted = true
+			}
+		}
+	}
+
+	return nil
 }

cmd/restore.go

@@ -27,5 +27,5 @@ func Restore(ctx *cli.Context) {
 	if err := hw.Save(); err != nil {
 		log.Fatal(err)
 	}
-	hw.Summarize()
+	hw.Summarize(user.HWNotSubmitted)
 }

user/homework.go

@@ -10,6 +10,10 @@ import (
 // HWFilter is used to categorize homework items.
 type HWFilter int
 
+// SummaryOption is an alias of HWFilter that allows
+// selective display of summary items
+type SummaryOption HWFilter
+
 const (
 	// HWAll represents all items in the collection.
 	HWAll = iota
@@ -19,6 +23,9 @@ const (
 	// HWNew represents problems that did not yet exist on the
 	// user's filesystem.
 	HWNew
+	// HWNotSubmitted represents problems that have not been submitted
+	// for review.
+	HWNotSubmitted
 )
 
 // Homework is a collection of problems that were fetched from the APIs.
@@ -96,6 +103,8 @@ func (hw *Homework) heading(filter HWFilter, count int) {
 		status = "Updated:"
 	case HWNew:
 		status = "New:"
+	case HWNotSubmitted:
+		status = "Not Submitted:"
 	}
 	summary := fmt.Sprintf("%d %s", count, unit)
 	fmt.Printf(hw.template, status, summary)
@@ -112,10 +121,14 @@ func (hw *Homework) maxTitleWidth() int {
 }
 
 // Summarize prints a full report of new and updated items in the set.
-func (hw *Homework) Summarize() {
+func (hw *Homework) Summarize(summaryFilter SummaryOption) {
 	hw.Report(HWUpdated)
 	hw.Report(HWNew)
 
+	if summaryFilter != HWNotSubmitted {
+		hw.Report(HWNotSubmitted)
+	}
+
 	fresh := len(hw.ItemsMatching(HWNew))
 	updated := len(hw.ItemsMatching(HWUpdated))
 	unchanged := len(hw.Items) - updated - fresh

user/item.go

@@ -32,6 +32,8 @@ func (it *Item) Matches(filter HWFilter) bool {
 		return it.isNew
 	case HWUpdated:
 		return it.isUpdated
+	case HWNotSubmitted:
+		return !it.Submitted
 	}
 	return true
 }