users can have tags to load all unanswered question for tags

main.go

@@ -50,13 +50,17 @@ func Main() error {
 		return err
 	}
 	user := os.Getenv("USER")
-	for q, history := range db.HistoryOf(user) {
-		log.Printf("%s/%s/%+v", user, q, history)
+	for q, _ := range db.HistoryOf(user) {
 		if time.Until(db.Next(user, q)) > 0 {
 			continue
 		}
 		question := db.Question(q)
-		fmt.Printf("> Q: %s\n", question.Q)
+		fmt.Printf("> Q: ")
+		if strings.HasPrefix(question.Q, "img:") {
+		} else {
+			fmt.Printf("%s", question.Q)
+		}
+		fmt.Printf("\n")
 		fmt.Printf("> %+v\n", question.Tags)
 		var response string
 		for i := range question.Clues {
@@ -108,11 +112,14 @@ func readline() string {
 }
 
 func NewDB() (DB, error) {
-	var db yamlDB
-	if b, err := os.ReadFile(os.Getenv("DB")); err != nil {
-		return nil, err
-	} else if err := yaml.Unmarshal(b, &db); err != nil {
-		return nil, err
+	return newYamlDB(os.Getenv("DB"))
 }
-	return db, nil
+
+func (q Question) Tagged(tag string) bool {
+	for i := range q.Tags {
+		if q.Tags[i] == tag {
+			return true
+		}
+	}
+	return false
 }

testdata/tofugu.yaml

@@ -1,14 +1,15 @@
 knowledge:
   questions:
-    a:
-      q: whats a fieldset
+    a-hiragana:
+      q: img:testdata/a-hiragana-0.jpg
       clues:
-      - clue1 of 2
-      tags:
-      - hiragana
-      - vowel
+      - img:testdata/a-hiragana-1.jpg
+      tags: [hiragana, vowel]
 users:
   breel:
+    tags:
+    - hiragana
+    - katakana
     history: {}
 cadence:
 - 1h

yamldb.go

@@ -1,9 +1,11 @@
 package main
 
 import (
+	"os"
 	"time"
 
 	"github.com/google/uuid"
+	"gopkg.in/yaml.v2"
 )
 
 type (
@@ -17,12 +19,41 @@ type (
 		Answers   map[string]Answer
 	}
 	user struct {
+		Tags    []string
 		History map[string][]History
 	}
 )
 
+func newYamlDB(p string) (yamlDB, error) {
+	db := yamlDB{
+		Knowledge: knowledge{
+			Questions: map[string]Question{},
+			Answers:   map[string]Answer{},
+		},
+		Users:   map[string]user{},
+		Cadence: []duration{},
+	}
+	if b, err := os.ReadFile(p); err != nil {
+		return yamlDB{}, err
+	} else if err := yaml.Unmarshal(b, &db); err != nil {
+		return yamlDB{}, err
+	}
+	return db, nil
+}
+
 func (db yamlDB) HistoryOf(user string) map[string][]History {
-	return db.Users[user].History
+	result := map[string][]History{}
+	for k, v := range db.Users[user].History {
+		result[k] = append([]History{}, v...)
+	}
+	for _, tag := range db.Users[user].Tags {
+		for qid, q := range db.Knowledge.Questions {
+			if _, ok := result[qid]; !ok && q.Tagged(tag) {
+				result[qid] = []History{}
+			}
+		}
+	}
+	return result
 }
 
 func (db yamlDB) Next(user, q string) time.Time {