refactor: implement database-specific schema architecture with schema-as-query pattern

🏗️ **Major Database Schema Refactoring**

**Problem Solved**: Eliminated model duplication and multiple sources of truth by:
- Removed duplicate models (`internal/models/content.go`)
- Replaced inlined schema strings with sqlc-generated setup functions
- Implemented database-specific schemas with proper NOT NULL constraints

**Key Improvements**:
 **Single Source of Truth**: Database schemas define all types, no manual sync needed
 **Clean Generated Types**: sqlc generates `string` and `int64` instead of `sql.NullString/sql.NullTime`
 **Schema-as-Query Pattern**: Setup functions generated by sqlc for type safety
 **Database-Specific Optimization**: SQLite INTEGER timestamps, PostgreSQL BIGINT timestamps
 **Cross-Database Compatibility**: Single codebase supports both SQLite and PostgreSQL

**Architecture Changes**:
- `db/sqlite/` - SQLite-specific schema and setup queries
- `db/postgresql/` - PostgreSQL-specific schema and setup queries
- `db/queries/` - Cross-database CRUD queries using `sqlc.arg()` syntax
- `internal/db/database.go` - Database abstraction with runtime selection
- `internal/api/models.go` - Clean API models for requests/responses

**Version Control System**: Complete element-level history with user attribution and rollback

**Verification**:  Full API workflow tested (create → update → rollback → versions)
**Production Ready**: Supports SQLite (development) → PostgreSQL (production) migration
This commit is contained in:
2025-09-09 00:25:07 +02:00
parent 161c320304
commit bab329b429
41 changed files with 3703 additions and 561 deletions

View File

@@ -0,0 +1,214 @@
// Code generated by sqlc. DO NOT EDIT.
// versions:
// sqlc v1.29.0
// source: content.sql
package sqlite
import (
"context"
"strings"
)
const createContent = `-- name: CreateContent :one
INSERT INTO content (id, site_id, value, type, last_edited_by)
VALUES (?1, ?2, ?3, ?4, ?5)
RETURNING id, site_id, value, type, created_at, updated_at, last_edited_by
`
type CreateContentParams struct {
ID string `json:"id"`
SiteID string `json:"site_id"`
Value string `json:"value"`
Type string `json:"type"`
LastEditedBy string `json:"last_edited_by"`
}
func (q *Queries) CreateContent(ctx context.Context, arg CreateContentParams) (Content, error) {
row := q.db.QueryRowContext(ctx, createContent,
arg.ID,
arg.SiteID,
arg.Value,
arg.Type,
arg.LastEditedBy,
)
var i Content
err := row.Scan(
&i.ID,
&i.SiteID,
&i.Value,
&i.Type,
&i.CreatedAt,
&i.UpdatedAt,
&i.LastEditedBy,
)
return i, err
}
const deleteContent = `-- name: DeleteContent :exec
DELETE FROM content
WHERE id = ?1 AND site_id = ?2
`
type DeleteContentParams struct {
ID string `json:"id"`
SiteID string `json:"site_id"`
}
func (q *Queries) DeleteContent(ctx context.Context, arg DeleteContentParams) error {
_, err := q.db.ExecContext(ctx, deleteContent, arg.ID, arg.SiteID)
return err
}
const getAllContent = `-- name: GetAllContent :many
SELECT id, site_id, value, type, created_at, updated_at, last_edited_by
FROM content
WHERE site_id = ?1
ORDER BY updated_at DESC
`
func (q *Queries) GetAllContent(ctx context.Context, siteID string) ([]Content, error) {
rows, err := q.db.QueryContext(ctx, getAllContent, siteID)
if err != nil {
return nil, err
}
defer rows.Close()
var items []Content
for rows.Next() {
var i Content
if err := rows.Scan(
&i.ID,
&i.SiteID,
&i.Value,
&i.Type,
&i.CreatedAt,
&i.UpdatedAt,
&i.LastEditedBy,
); err != nil {
return nil, err
}
items = append(items, i)
}
if err := rows.Close(); err != nil {
return nil, err
}
if err := rows.Err(); err != nil {
return nil, err
}
return items, nil
}
const getBulkContent = `-- name: GetBulkContent :many
SELECT id, site_id, value, type, created_at, updated_at, last_edited_by
FROM content
WHERE site_id = ?1 AND id IN (/*SLICE:ids*/?)
`
type GetBulkContentParams struct {
SiteID string `json:"site_id"`
Ids []string `json:"ids"`
}
func (q *Queries) GetBulkContent(ctx context.Context, arg GetBulkContentParams) ([]Content, error) {
query := getBulkContent
var queryParams []interface{}
queryParams = append(queryParams, arg.SiteID)
if len(arg.Ids) > 0 {
for _, v := range arg.Ids {
queryParams = append(queryParams, v)
}
query = strings.Replace(query, "/*SLICE:ids*/?", strings.Repeat(",?", len(arg.Ids))[1:], 1)
} else {
query = strings.Replace(query, "/*SLICE:ids*/?", "NULL", 1)
}
rows, err := q.db.QueryContext(ctx, query, queryParams...)
if err != nil {
return nil, err
}
defer rows.Close()
var items []Content
for rows.Next() {
var i Content
if err := rows.Scan(
&i.ID,
&i.SiteID,
&i.Value,
&i.Type,
&i.CreatedAt,
&i.UpdatedAt,
&i.LastEditedBy,
); err != nil {
return nil, err
}
items = append(items, i)
}
if err := rows.Close(); err != nil {
return nil, err
}
if err := rows.Err(); err != nil {
return nil, err
}
return items, nil
}
const getContent = `-- name: GetContent :one
SELECT id, site_id, value, type, created_at, updated_at, last_edited_by
FROM content
WHERE id = ?1 AND site_id = ?2
`
type GetContentParams struct {
ID string `json:"id"`
SiteID string `json:"site_id"`
}
func (q *Queries) GetContent(ctx context.Context, arg GetContentParams) (Content, error) {
row := q.db.QueryRowContext(ctx, getContent, arg.ID, arg.SiteID)
var i Content
err := row.Scan(
&i.ID,
&i.SiteID,
&i.Value,
&i.Type,
&i.CreatedAt,
&i.UpdatedAt,
&i.LastEditedBy,
)
return i, err
}
const updateContent = `-- name: UpdateContent :one
UPDATE content
SET value = ?1, type = ?2, last_edited_by = ?3
WHERE id = ?4 AND site_id = ?5
RETURNING id, site_id, value, type, created_at, updated_at, last_edited_by
`
type UpdateContentParams struct {
Value string `json:"value"`
Type string `json:"type"`
LastEditedBy string `json:"last_edited_by"`
ID string `json:"id"`
SiteID string `json:"site_id"`
}
func (q *Queries) UpdateContent(ctx context.Context, arg UpdateContentParams) (Content, error) {
row := q.db.QueryRowContext(ctx, updateContent,
arg.Value,
arg.Type,
arg.LastEditedBy,
arg.ID,
arg.SiteID,
)
var i Content
err := row.Scan(
&i.ID,
&i.SiteID,
&i.Value,
&i.Type,
&i.CreatedAt,
&i.UpdatedAt,
&i.LastEditedBy,
)
return i, err
}