GraphQL API and utilities for the rpdata project
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package postgres
import (
"context"
"database/sql"
"git.aiterp.net/rpdata/api/database/postgres/psqlcore"
"git.aiterp.net/rpdata/api/internal/generate"
"git.aiterp.net/rpdata/api/models"
)
type storyRepository struct {
insertWithIDs bool
db *sql.DB
}
func (r *storyRepository) Find(ctx context.Context, id string) (*models.Story, error) {
q := psqlcore.New(r.db)
story, err := q.SelectStory(ctx, id)
if err != nil {
return nil, err
}
tags, err := q.SelectTagsByTarget(ctx, psqlcore.SelectTagsByTargetParams{
TargetKind: "Story",
TargetID: story.ID,
})
if err != nil && err != sql.ErrNoRows {
return nil, err
}
return r.story(story, tags), nil
}
func (r *storyRepository) List(ctx context.Context, filter models.StoryFilter) ([]*models.Story, error) {
q := psqlcore.New(r.db)
params := psqlcore.SelectStoriesParams{LimitSize: 0}
if len(filter.Tags) > 0 {
targets, err := q.SelectTargetsByTags(ctx, psqlcore.SelectTargetsByTagsParams{
TagNames: models.EncodeTagArray(filter.Tags),
TargetKind: "Story",
})
if err != nil && err != sql.ErrNoRows {
return nil, err
}
if len(params.Ids) == 0 {
return []*models.Story{}, nil
}
params.FilterID = true
params.Ids = targets
}
if filter.Author != nil {
params.FilterAuthor = true
params.Author = *filter.Author
}
if filter.Category != nil {
params.FilterCategory = true
params.Category = string(*filter.Category)
}
if !filter.EarliestFictionalDate.IsZero() {
params.FilterEarlistFictionalDate = true
params.EarliestFictionalDate = filter.EarliestFictionalDate.UTC()
}
if !filter.LatestFictionalDate.IsZero() {
params.FilterLastestFictionalDate = true
params.LatestFictionalDate = filter.LatestFictionalDate.UTC()
}
if filter.Open != nil {
params.FilterOpen = true
params.Open = *filter.Open
}
if filter.Unlisted != nil {
params.FilterUnlisted = true
params.Unlisted = *filter.Unlisted
}
if filter.Limit > 0 {
params.LimitSize = int32(filter.Limit)
}
stories, err := q.SelectStories(ctx, params)
if err != nil {
return nil, err
}
targetIDs := make([]string, len(stories))
for i, story := range stories {
targetIDs[i] = story.ID
}
tags, err := q.SelectTagsByTargets(ctx, psqlcore.SelectTagsByTargetsParams{
TargetKind: "Story",
TargetIds: targetIDs,
})
return r.stories(stories, tags), nil
}
func (r *storyRepository) Insert(ctx context.Context, story models.Story) (*models.Story, error) {
tx, err := r.db.BeginTx(ctx, nil)
if err != nil {
return nil, err
}
defer func() { _ = tx.Rollback() }()
q := psqlcore.New(tx)
if !r.insertWithIDs || len(story.ID) < 8 {
story.ID = generate.StoryID()
}
if story.UpdatedDate.Before(story.CreatedDate) {
story.UpdatedDate = story.CreatedDate
}
err = q.InsertStory(ctx, psqlcore.InsertStoryParams{
ID: story.ID,
Author: story.Author,
Name: story.Name,
Category: string(story.Category),
Open: story.Open,
Listed: story.Listed,
SortByFictionalDate: story.SortByFictionalDate,
CreatedDate: story.CreatedDate.UTC(),
FictionalDate: story.FictionalDate.UTC(),
UpdatedDate: story.UpdatedDate.UTC(),
})
if err != nil {
return nil, err
}
// This is inefficient, but tags are very rarely added before the story is submitted.
err = q.SetTags(ctx, psqlcore.SetTagsParams{
Tags: models.EncodeTagArray(story.Tags),
TargetKind: "Story",
TargetID: story.ID,
})
if err != nil {
return nil, err
}
return &story, tx.Commit()
}
func (r *storyRepository) Update(ctx context.Context, story models.Story, update models.StoryUpdate) (*models.Story, error) {
story.ApplyUpdate(update)
err := psqlcore.New(r.db).UpdateStory(ctx, psqlcore.UpdateStoryParams{
Name: story.Name,
Category: string(story.Category),
Author: story.Author,
Open: story.Open,
Listed: story.Listed,
FictionalDate: story.FictionalDate.UTC(),
UpdatedDate: story.UpdatedDate.UTC(),
SortByFictionalDate: story.SortByFictionalDate,
ID: story.ID,
})
if err != nil {
return nil, err
}
return &story, nil
}
func (r *storyRepository) AddTag(ctx context.Context, story models.Story, tag models.Tag) error {
return psqlcore.New(r.db).SetTag(ctx, psqlcore.SetTagParams{
TargetKind: "Story",
TargetID: story.ID,
Tag: tag.String(),
})
}
func (r *storyRepository) RemoveTag(ctx context.Context, story models.Story, tag models.Tag) error {
return psqlcore.New(r.db).ClearTag(ctx, psqlcore.ClearTagParams{
TargetKind: "Story",
TargetID: story.ID,
Tag: tag.String(),
})
}
func (r *storyRepository) Delete(ctx context.Context, story models.Story) error {
tx, err := r.db.BeginTx(ctx, nil)
if err != nil {
return err
}
defer func() { _ = tx.Rollback() }()
q := psqlcore.New(tx)
err = q.ClearTagsByTarget(ctx, psqlcore.ClearTagsByTargetParams{
TargetKind: "Story",
TargetID: story.ID,
})
if err != nil {
return err
}
err = q.DeleteCommentsByStoryID(ctx, story.ID)
if err != nil {
return err
}
err = q.DeleteChaptersByStoryID(ctx, story.ID)
if err != nil {
return err
}
err = q.DeleteStory(ctx, story.ID)
if err != nil {
return err
}
return tx.Commit()
}
func (r *storyRepository) story(story psqlcore.Story, tags []psqlcore.CommonTag) *models.Story {
storyTags := make([]models.Tag, 0, 8)
for _, tag := range tags {
if tag.TargetKind == "Story" && tag.TargetID == story.ID {
newTag := models.Tag{}
err := newTag.Decode(tag.Tag)
if err != nil {
continue
}
storyTags = append(storyTags, newTag)
}
}
return &models.Story{
ID: story.ID,
Author: story.Author,
Name: story.Name,
Category: models.StoryCategory(story.Category),
Open: story.Open,
Listed: story.Listed,
Tags: storyTags,
CreatedDate: story.CreatedDate,
FictionalDate: story.FictionalDate,
UpdatedDate: story.UpdatedDate,
SortByFictionalDate: story.SortByFictionalDate,
}
}
func (r *storyRepository) stories(stories []psqlcore.Story, tags []psqlcore.CommonTag) []*models.Story {
results := make([]*models.Story, 0, len(stories))
for _, story := range stories {
results = append(results, r.story(story, tags))
}
return results
}