Added ability to select questions

.github/workflows/go.yml

@@ -2,24 +2,23 @@ name: Go
 
 on:
   push:
-    branches: [ master ]
+    branches: [master]
   pull_request:
-    branches: [ master ]
+    branches: [master]
 
 jobs:
-
   build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+      - uses: actions/checkout@v2
 
-    - name: Set up Go
-      uses: actions/setup-go@v2
-      with:
-        go-version: 1.15
+      - name: Set up Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: 1.22
 
-    - name: Build
-      run: go build -v ./...
+      - name: Build
+        run: go build -v ./...
 
-    - name: Test
-      run: go test -v ./...
+      - name: Test
+        run: go test -v ./...

.gitignore

@@ -6,3 +6,5 @@ vendor
 out
 config.yaml
 .DS_Store
+
+/results

README.md

@@ -57,11 +57,21 @@ cookies: >-
 # output directory
 output: results
 # limit 5 parallel download threads
-parallelDownloads: 5 
+parallelDownloads: 5
 # wait time between downloads in seconds
-waitTime: 1 
+waitTime: 1
 # burst per wait time
-rate: 10 
+rate: 10
+# select questions to download (optional)
+specificQuestions:
+  - "question-slug-1"
+  - "question-slug-2"
+  - "question-slug-3"
+# select users to download their submissions (optional)
+specificUsers:
+  - "user-1"
+  - "user-2"
+  - "user-3"
 ```
 
 Run `./hackerrank-dl` with `config.yaml` in the working directory to start the magic.

config.go

@@ -26,23 +26,26 @@ package main
 
 import (
 	"fmt"
-	"io/ioutil"
+	"os"
 
 	"gopkg.in/yaml.v2"
 )
 
 type Config struct {
-	Contest           string `yaml:"contest"`
-	Cookies           string `yaml:"cookies"`
-	Output            string `yaml:"output"`
-	OutDir            string `yaml:"-"`
-	ParallelDownloads int    `yaml:"parallelDownloads"`
-	MaxWaitTime       int    `yaml:"waitTime"`
-	Rate              int    `yaml:"rate"`
+	Contest           string   `yaml:"contest"`
+	Cookies           string   `yaml:"cookies"`
+	Output            string   `yaml:"output"`
+	OutDir            string   `yaml:"-"`
+	ParallelDownloads int      `yaml:"parallelDownloads"`
+	MaxWaitTime       int      `yaml:"waitTime"`
+	Rate              int      `yaml:"rate"`
+	SpecificQuestions []string `yaml:"specificQuestions,omitempty"`
+	SpecificUsers []string `yaml:"specificUsers,omitempty"`
 }
 
+
 func ParseConfig(filename string) (*Config, error) {
-	data, err := ioutil.ReadFile(filename)
+	data, err := os.ReadFile(filename)
 	if err != nil {
 		return nil, fmt.Errorf("error reading config file, %v", err)
 	}

examples/sample-config.yaml

@@ -5,3 +5,11 @@ output: results
 parallelDownloads: 5 # limit 1 parallel download
 waitTime: 1 #seconds
 rate: 10 # rate per wait time
+specificQuestions:
+  - "question-slug-1"
+  - "question-slug-2"
+  - "question-slug-3"
+specificUsers:
+  - "user-1"
+  - "user-2"
+  - "user-3"

go.mod

@@ -1,9 +1,14 @@
 module github.com/kasvith/hackerrank-dl
 
-go 1.14
+go 1.22
 
 require (
-	github.com/go-resty/resty/v2 v2.2.0
-	github.com/sirupsen/logrus v1.4.2
-	gopkg.in/yaml.v2 v2.2.8
+	github.com/go-resty/resty/v2 v2.11.0
+	github.com/sirupsen/logrus v1.9.3
+	gopkg.in/yaml.v2 v2.4.0
+)
+
+require (
+	golang.org/x/net v0.21.0 // indirect
+	golang.org/x/sys v0.17.0 // indirect
 )

go.sum

@@ -1,24 +1,64 @@
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
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 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/go-resty/resty/v2 v2.2.0 h1:vgZ1cdblp8Aw4jZj3ZsKh6yKAlMg3CHMrqFSFFd+jgY=
-github.com/go-resty/resty/v2 v2.2.0/go.mod h1:nYW/8rxqQCmI3bPz9Fsmjbr2FBjGuR2Mzt6kDh3zZ7w=
-github.com/konsorten/go-windows-terminal-sequences v1.0.1 h1:mweAR1A6xJ3oS2pRaGiHgQ4OO8tzTaLawm8vnODuwDk=
-github.com/konsorten/go-windows-terminal-sequences v1.0.1/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
+github.com/go-resty/resty/v2 v2.11.0 h1:i7jMfNOJYMp69lq7qozJP+bjgzfAzeOhuGlyDrqxT/8=
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 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
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-gopkg.in/yaml.v2 v2.2.8 h1:obN1ZagJSUGI0Ek/LBmuj4SNLPfIny3KsKFopxRdj10=
-gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
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+gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

persist.go

@@ -26,10 +26,10 @@ package main
 
 import (
 	"fmt"
-	log "github.com/sirupsen/logrus"
-	"io/ioutil"
 	"os"
 	"path/filepath"
+
+	log "github.com/sirupsen/logrus"
 )
 
 func CreateDownloadDir(path string) error {
@@ -52,7 +52,7 @@ func SaveDownload(config *Config, question string, data *SubmissionData) error {
 		return fmt.Errorf("error creating download directory, %v", err)
 	}
 	log.Infof("saving file: %s", filePath)
-	err = ioutil.WriteFile(filePath, []byte(data.Code), os.ModePerm)
+	err = os.WriteFile(filePath, []byte(data.Code), os.ModePerm)
 	if err != nil {
 		return fmt.Errorf("error saving file, %v", err)
 	}

questions.go

@@ -27,6 +27,7 @@ package main
 import (
 	"encoding/json"
 	"fmt"
+
 	"github.com/go-resty/resty/v2"
 
 	log "github.com/sirupsen/logrus"
@@ -63,17 +64,37 @@ func GetAllQuestions(client *resty.Client, config *Config) (*Questions, error) {
 	limit := 50
 	qs, err := getQuestions(client, config.Contest, 0, limit)
 	if err != nil {
-		return nil, fmt.Errorf("error fetching question names, %v", err)
+			return nil, fmt.Errorf("error fetching question names, %v", err)
 	}
 
-	// we get total questions in two requests
-	if qs.Total > limit {
-		// ok we got more to download
-		qs2, err := getQuestions(client, config.Contest, limit, qs.Total)
-		if err != nil {
-			return nil, fmt.Errorf("error fetching question names, %v", err)
-		}
-		qs.Models = append(qs.Models, qs2.Models...)
+	// Filter for specific questions if SpecificQuestions is not empty
+	if len(config.SpecificQuestions) > 0 {
+			filteredModels := []struct {
+					ID   int    `json:"id"`
+					Slug string `json:"slug"`
+			}{}
+
+			for _, q := range qs.Models {
+					for _, specificSlug := range config.SpecificQuestions {
+							if q.Slug == specificSlug {
+									filteredModels = append(filteredModels, q)
+									break
+							}
+					}
+			}
+			qs.Models = filteredModels
+			qs.Total = len(filteredModels)
+	} else {
+			// If no specific questions, get the rest of the questions
+			if qs.Total > limit {
+					qs2, err := getQuestions(client, config.Contest, limit, qs.Total)
+					if err != nil {
+							return nil, fmt.Errorf("error fetching question names, %v", err)
+					}
+					qs.Models = append(qs.Models, qs2.Models...)
+			}
 	}
+
 	return qs, nil
 }
+

submissions.go

@@ -27,6 +27,7 @@ package main
 import (
 	"encoding/json"
 	"fmt"
+	"slices"
 
 	"github.com/go-resty/resty/v2"
 	log "github.com/sirupsen/logrus"
@@ -71,24 +72,37 @@ func getContestSubmissionData(client *resty.Client, contest string, question str
 }
 
 // filter submissions and filter only top score, oldest submission for a team
-func filterSubmissions(submissions *Submissions) SubmissionMap {
+func filterSubmissions(submissions *Submissions, config *Config) SubmissionMap {
 	hm := make(SubmissionMap)
 
 	for _, s := range submissions.Models {
 		if s.HackerUsername == "[deleted]" {
 			continue
 		}
 
-		if val, ok := hm[s.HackerUsername]; ok {
-			if s.Score > val.Score {
-				hm[s.HackerUsername] = s
-			} else if s.Score == val.Score && s.CreatedAt < val.CreatedAt {
-				// if we have two submissions with same score, pick the oldest one
+		if(len(config.SpecificUsers) > 0) {
+			if (slices.Contains(config.SpecificUsers, s.HackerUsername)) {
+				if val, ok := hm[s.HackerUsername]; ok {
+					if s.Score > val.Score {
+						hm[s.HackerUsername] = s
+					} else if s.Score == val.Score && s.CreatedAt > val.CreatedAt {
+						hm[s.HackerUsername] = s
+					}
+					continue
+				}
 				hm[s.HackerUsername] = s
 			}
-			continue
+		} else {
+			if val, ok := hm[s.HackerUsername]; ok {
+				if s.Score > val.Score {
+					hm[s.HackerUsername] = s
+				} else if s.Score == val.Score && s.CreatedAt > val.CreatedAt {
+					hm[s.HackerUsername] = s
+				}
+				continue
+			}
+			hm[s.HackerUsername] = s
 		}
-		hm[s.HackerUsername] = s
 	}
 
 	return hm
@@ -110,7 +124,7 @@ func GetAllSubmissions(client *resty.Client, config *Config, question string) (S
 		}
 		qs.Models = append(qs.Models, qs2.Models...)
 	}
-	return filterSubmissions(qs), nil
+	return filterSubmissions(qs, config), nil
 }
 
 type SubmissionData struct {