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:
175
insertr-server/internal/db/sqlite/versions.sql.go
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175
insertr-server/internal/db/sqlite/versions.sql.go
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// Code generated by sqlc. DO NOT EDIT.
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// versions:
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// sqlc v1.29.0
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// source: versions.sql
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package sqlite
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import (
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"context"
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"database/sql"
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)
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const createContentVersion = `-- name: CreateContentVersion :exec
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INSERT INTO content_versions (content_id, site_id, value, type, created_by)
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VALUES (?1, ?2, ?3, ?4, ?5)
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`
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type CreateContentVersionParams struct {
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ContentID string `json:"content_id"`
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SiteID string `json:"site_id"`
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Value string `json:"value"`
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Type string `json:"type"`
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CreatedBy string `json:"created_by"`
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}
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func (q *Queries) CreateContentVersion(ctx context.Context, arg CreateContentVersionParams) error {
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_, err := q.db.ExecContext(ctx, createContentVersion,
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arg.ContentID,
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arg.SiteID,
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arg.Value,
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arg.Type,
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arg.CreatedBy,
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)
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return err
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}
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const deleteOldVersions = `-- name: DeleteOldVersions :exec
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DELETE FROM content_versions
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WHERE created_at < ?1 AND site_id = ?2
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`
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type DeleteOldVersionsParams struct {
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CreatedBefore int64 `json:"created_before"`
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SiteID string `json:"site_id"`
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}
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func (q *Queries) DeleteOldVersions(ctx context.Context, arg DeleteOldVersionsParams) error {
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_, err := q.db.ExecContext(ctx, deleteOldVersions, arg.CreatedBefore, arg.SiteID)
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return err
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}
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const getAllVersionsForSite = `-- name: GetAllVersionsForSite :many
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SELECT
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cv.version_id, cv.content_id, cv.site_id, cv.value, cv.type, cv.created_at, cv.created_by,
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c.value as current_value
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FROM content_versions cv
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LEFT JOIN content c ON cv.content_id = c.id AND cv.site_id = c.site_id
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WHERE cv.site_id = ?1
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ORDER BY cv.created_at DESC
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LIMIT ?2
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`
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type GetAllVersionsForSiteParams struct {
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SiteID string `json:"site_id"`
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LimitCount int64 `json:"limit_count"`
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}
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type GetAllVersionsForSiteRow struct {
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VersionID int64 `json:"version_id"`
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ContentID string `json:"content_id"`
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SiteID string `json:"site_id"`
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Value string `json:"value"`
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Type string `json:"type"`
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CreatedAt int64 `json:"created_at"`
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CreatedBy string `json:"created_by"`
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CurrentValue sql.NullString `json:"current_value"`
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}
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func (q *Queries) GetAllVersionsForSite(ctx context.Context, arg GetAllVersionsForSiteParams) ([]GetAllVersionsForSiteRow, error) {
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rows, err := q.db.QueryContext(ctx, getAllVersionsForSite, arg.SiteID, arg.LimitCount)
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if err != nil {
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return nil, err
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}
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defer rows.Close()
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var items []GetAllVersionsForSiteRow
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for rows.Next() {
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var i GetAllVersionsForSiteRow
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if err := rows.Scan(
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&i.VersionID,
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&i.ContentID,
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&i.SiteID,
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&i.Value,
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&i.Type,
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&i.CreatedAt,
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&i.CreatedBy,
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&i.CurrentValue,
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); err != nil {
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return nil, err
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}
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items = append(items, i)
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}
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if err := rows.Close(); err != nil {
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return nil, err
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}
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if err := rows.Err(); err != nil {
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return nil, err
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}
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return items, nil
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}
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const getContentVersion = `-- name: GetContentVersion :one
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SELECT version_id, content_id, site_id, value, type, created_at, created_by
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FROM content_versions
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WHERE version_id = ?1
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`
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func (q *Queries) GetContentVersion(ctx context.Context, versionID int64) (ContentVersion, error) {
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row := q.db.QueryRowContext(ctx, getContentVersion, versionID)
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var i ContentVersion
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err := row.Scan(
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&i.VersionID,
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&i.ContentID,
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&i.SiteID,
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&i.Value,
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&i.Type,
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&i.CreatedAt,
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&i.CreatedBy,
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)
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return i, err
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}
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const getContentVersionHistory = `-- name: GetContentVersionHistory :many
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SELECT version_id, content_id, site_id, value, type, created_at, created_by
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FROM content_versions
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WHERE content_id = ?1 AND site_id = ?2
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ORDER BY created_at DESC
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LIMIT ?3
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`
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type GetContentVersionHistoryParams struct {
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ContentID string `json:"content_id"`
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SiteID string `json:"site_id"`
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LimitCount int64 `json:"limit_count"`
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}
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func (q *Queries) GetContentVersionHistory(ctx context.Context, arg GetContentVersionHistoryParams) ([]ContentVersion, error) {
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rows, err := q.db.QueryContext(ctx, getContentVersionHistory, arg.ContentID, arg.SiteID, arg.LimitCount)
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if err != nil {
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return nil, err
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}
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defer rows.Close()
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var items []ContentVersion
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for rows.Next() {
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var i ContentVersion
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if err := rows.Scan(
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&i.VersionID,
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&i.ContentID,
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&i.SiteID,
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&i.Value,
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&i.Type,
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&i.CreatedAt,
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&i.CreatedBy,
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); err != nil {
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return nil, err
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}
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items = append(items, i)
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}
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if err := rows.Close(); err != nil {
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return nil, err
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}
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if err := rows.Err(); err != nil {
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return nil, err
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}
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return items, nil
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}
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