models, graph2: Added Comment type and queries, and hooked it up to chapter.

models/chapter-comment-mode.go

@@ -0,0 +1,57 @@
+package models
+
+import (
+	"fmt"
+	"io"
+)
+
+// ChapterCommentMode represents the kind of tags.
+type ChapterCommentMode string
+
+const (
+	// ChapterCommentModeDisabled is a chapter comment mode, see GraphQL documentation.
+	ChapterCommentModeDisabled ChapterCommentMode = "Disabled"
+
+	// ChapterCommentModeArticle is a chapter comment mode, see GraphQL documentation.
+	ChapterCommentModeArticle ChapterCommentMode = "Article"
+
+	// ChapterCommentModeChat is a chapter comment mode, see GraphQL documentation.
+	ChapterCommentModeChat ChapterCommentMode = "Chat"
+
+	// ChapterCommentModeMessage is a chapter comment mode, see GraphQL documentation.
+	ChapterCommentModeMessage ChapterCommentMode = "Message"
+)
+
+// UnmarshalGQL unmarshals
+func (e *ChapterCommentMode) UnmarshalGQL(v interface{}) error {
+	str, ok := v.(string)
+	if !ok {
+		return fmt.Errorf("enums must be strings")
+	}
+
+	*e = ChapterCommentMode(str)
+	switch *e {
+	case ChapterCommentModeDisabled, ChapterCommentModeArticle, ChapterCommentModeChat, ChapterCommentModeMessage:
+		return nil
+	default:
+		return fmt.Errorf("%s is not a valid ChapterCommentMode", str)
+	}
+}
+
+// IsEnabled returns true if comments are enabled.
+func (e ChapterCommentMode) IsEnabled() bool {
+	return e != ChapterCommentModeDisabled && len(e) != 0
+}
+
+// MarshalGQL turns it into a JSON string
+func (e ChapterCommentMode) MarshalGQL(w io.Writer) {
+	// Backwards compatibility: Empty value means disabled.
+	if len(e) == 0 {
+		w.Write(disabledChapterCommentModeBytes)
+		return
+	}
+
+	fmt.Fprint(w, "\""+string(e)+"\"")
+}
+
+var disabledChapterCommentModeBytes = []byte(`"Disabled"`)

models/chapter.go

@@ -4,12 +4,19 @@ import "time"
 
 // A Chapter is a part of a story.
 type Chapter struct {
-	ID            string    `bson:"_id"`
-	StoryID       string    `bson:"storyId"`
-	Title         string    `bson:"title"`
-	Author        string    `bson:"author"`
-	Source        string    `bson:"source"`
-	CreatedDate   time.Time `bson:"createdDate"`
-	FictionalDate time.Time `bson:"fictionalDate,omitempty"`
-	EditedDate    time.Time `bson:"editedDate"`
+	ID             string             `bson:"_id"`
+	StoryID        string             `bson:"storyId"`
+	Title          string             `bson:"title"`
+	Author         string             `bson:"author"`
+	Source         string             `bson:"source"`
+	CreatedDate    time.Time          `bson:"createdDate"`
+	FictionalDate  time.Time          `bson:"fictionalDate,omitempty"`
+	EditedDate     time.Time          `bson:"editedDate"`
+	CommentMode    ChapterCommentMode `bson:"commentMode"`
+	CommentsLocked bool               `bson:"commentsLocked"`
+}
+
+// CanComment returns true if the chapter can be commented to.
+func (chapter *Chapter) CanComment() bool {
+	return !chapter.CommentsLocked && chapter.CommentMode.IsEnabled()
 }

models/comment.go

@@ -0,0 +1,17 @@
+package models
+
+import "time"
+
+// A Comment is a comment on a chapter.
+type Comment struct {
+	ID            string    `bson:"id"`
+	ChapterID     string    `bson:"chapterId"`
+	Subject       string    `bson:"subject"`
+	Author        string    `bson:"author"`
+	CharacterName string    `bson:"characterName"`
+	CharacterID   string    `bson:"characterId"`
+	FictionalDate time.Time `bson:"fictionalDate"`
+	CreatedDate   time.Time `bson:"createdDate"`
+	EditedDate    time.Time `bson:"editeddDate"`
+	Source        string    `bson:"sources"`
+}

models/comments/db.go

@@ -0,0 +1,66 @@
+package comments
+
+import (
+	"crypto/rand"
+	"encoding/binary"
+	"strconv"
+
+	"git.aiterp.net/rpdata/api/internal/store"
+	"git.aiterp.net/rpdata/api/models"
+	"github.com/globalsign/mgo"
+)
+
+var collection *mgo.Collection
+
+func find(query interface{}) (models.Comment, error) {
+	comment := models.Comment{}
+	err := collection.Find(query).One(&comment)
+
+	return comment, err
+}
+
+func list(query interface{}, limit int) ([]models.Comment, error) {
+	allocSize := 32
+	if limit >= 0 {
+		allocSize = limit
+	} else {
+		limit = 0
+	}
+
+	comments := make([]models.Comment, 0, allocSize)
+	err := collection.Find(query).Sort("createdDate").Limit(limit).All(&comments)
+	if err != nil {
+		return nil, err
+	}
+
+	return comments, nil
+}
+
+func makeCommentID() string {
+	result := "SCC"
+	offset := 0
+	data := make([]byte, 48)
+
+	rand.Read(data)
+	for len(result) < 32 {
+		result += strconv.FormatUint(binary.LittleEndian.Uint64(data[offset:]), 36)
+		offset += 8
+
+		if offset >= 48 {
+			rand.Read(data)
+			offset = 0
+		}
+	}
+
+	return result[:32]
+}
+
+func init() {
+	store.HandleInit(func(db *mgo.Database) {
+		collection = db.C("story.comments")
+
+		collection.EnsureIndexKey("chapterId")
+		collection.EnsureIndexKey("author")
+		collection.EnsureIndexKey("createdDate")
+	})
+}

models/comments/find.go

@@ -0,0 +1,11 @@
+package comments
+
+import (
+	"git.aiterp.net/rpdata/api/models"
+	"github.com/globalsign/mgo/bson"
+)
+
+// Find finds a comment by ID.
+func Find(id string) (models.Comment, error) {
+	return find(bson.M{"_id": id})
+}

models/comments/list.go

@@ -0,0 +1,11 @@
+package comments
+
+import (
+	"git.aiterp.net/rpdata/api/models"
+	"github.com/globalsign/mgo/bson"
+)
+
+// ListChapterID lists all comments by chapter-ID
+func ListChapterID(chapterID string, limit int) ([]models.Comment, error) {
+	return list(bson.M{"chapterId": chapterID}, limit)
+}