Torjus Håkestad
6326b3a3c1
- Add CLI entry point with urfave/cli/v2 (serve, index, list, search commands) - Add database interface and implementations for PostgreSQL and SQLite - Add schema versioning with automatic recreation on version mismatch - Add MCP protocol types and server scaffold - Add NixOS option types - Configure flake.nix with devShell and buildGoModule package Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
103 lines
3.0 KiB
Go
103 lines
3.0 KiB
Go
package database
|
|
|
|
// SchemaVersion is the current database schema version.
|
|
// When this changes, the database will be dropped and recreated.
|
|
const SchemaVersion = 1
|
|
|
|
// Common SQL statements shared between implementations.
|
|
const (
|
|
// SchemaInfoTable creates the schema version tracking table.
|
|
SchemaInfoTable = `
|
|
CREATE TABLE IF NOT EXISTS schema_info (
|
|
version INTEGER NOT NULL
|
|
)`
|
|
|
|
// RevisionsTable creates the revisions table.
|
|
RevisionsTable = `
|
|
CREATE TABLE IF NOT EXISTS revisions (
|
|
id INTEGER PRIMARY KEY,
|
|
git_hash TEXT NOT NULL UNIQUE,
|
|
channel_name TEXT,
|
|
commit_date TIMESTAMP,
|
|
indexed_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
|
|
option_count INTEGER NOT NULL DEFAULT 0
|
|
)`
|
|
|
|
// OptionsTable creates the options table.
|
|
OptionsTable = `
|
|
CREATE TABLE IF NOT EXISTS options (
|
|
id INTEGER PRIMARY KEY,
|
|
revision_id INTEGER NOT NULL REFERENCES revisions(id) ON DELETE CASCADE,
|
|
name TEXT NOT NULL,
|
|
parent_path TEXT NOT NULL,
|
|
type TEXT,
|
|
default_value TEXT,
|
|
example TEXT,
|
|
description TEXT,
|
|
read_only BOOLEAN NOT NULL DEFAULT FALSE
|
|
)`
|
|
|
|
// DeclarationsTable creates the declarations table.
|
|
DeclarationsTable = `
|
|
CREATE TABLE IF NOT EXISTS declarations (
|
|
id INTEGER PRIMARY KEY,
|
|
option_id INTEGER NOT NULL REFERENCES options(id) ON DELETE CASCADE,
|
|
file_path TEXT NOT NULL,
|
|
line INTEGER
|
|
)`
|
|
|
|
// FilesTable creates the files table.
|
|
FilesTable = `
|
|
CREATE TABLE IF NOT EXISTS files (
|
|
id INTEGER PRIMARY KEY,
|
|
revision_id INTEGER NOT NULL REFERENCES revisions(id) ON DELETE CASCADE,
|
|
file_path TEXT NOT NULL,
|
|
extension TEXT,
|
|
content TEXT NOT NULL
|
|
)`
|
|
)
|
|
|
|
// Index creation statements.
|
|
const (
|
|
// IndexOptionsRevisionName creates an index on options(revision_id, name).
|
|
IndexOptionsRevisionName = `
|
|
CREATE INDEX IF NOT EXISTS idx_options_revision_name
|
|
ON options(revision_id, name)`
|
|
|
|
// IndexOptionsRevisionParent creates an index on options(revision_id, parent_path).
|
|
IndexOptionsRevisionParent = `
|
|
CREATE INDEX IF NOT EXISTS idx_options_revision_parent
|
|
ON options(revision_id, parent_path)`
|
|
|
|
// IndexFilesRevisionPath creates an index on files(revision_id, file_path).
|
|
IndexFilesRevisionPath = `
|
|
CREATE UNIQUE INDEX IF NOT EXISTS idx_files_revision_path
|
|
ON files(revision_id, file_path)`
|
|
|
|
// IndexDeclarationsOption creates an index on declarations(option_id).
|
|
IndexDeclarationsOption = `
|
|
CREATE INDEX IF NOT EXISTS idx_declarations_option
|
|
ON declarations(option_id)`
|
|
)
|
|
|
|
// Drop statements for schema recreation.
|
|
const (
|
|
DropSchemaInfo = `DROP TABLE IF EXISTS schema_info`
|
|
DropDeclarations = `DROP TABLE IF EXISTS declarations`
|
|
DropOptions = `DROP TABLE IF EXISTS options`
|
|
DropFiles = `DROP TABLE IF EXISTS files`
|
|
DropRevisions = `DROP TABLE IF EXISTS revisions`
|
|
)
|
|
|
|
// ParentPath extracts the parent path from an option name.
|
|
// For example, "services.nginx.enable" returns "services.nginx".
|
|
// Top-level options return an empty string.
|
|
func ParentPath(name string) string {
|
|
for i := len(name) - 1; i >= 0; i-- {
|
|
if name[i] == '.' {
|
|
return name[:i]
|
|
}
|
|
}
|
|
return ""
|
|
}
|