313 lines
12 KiB
C
313 lines
12 KiB
C
/* Embedded SQL Schema for C Nostr Relay
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* Generated from db/schema.sql - Do not edit manually
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* Schema Version: 3
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*/
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#ifndef SQL_SCHEMA_H
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#define SQL_SCHEMA_H
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/* Schema version constant */
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#define EMBEDDED_SCHEMA_VERSION "3"
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/* Embedded SQL schema as C string literal */
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static const char* const EMBEDDED_SCHEMA_SQL =
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"-- C Nostr Relay Database Schema\n\
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-- SQLite schema for storing Nostr events with JSON tags support\n\
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\n\
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-- Schema version tracking\n\
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PRAGMA user_version = 3;\n\
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\n\
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-- Enable foreign key support\n\
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PRAGMA foreign_keys = ON;\n\
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\n\
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-- Optimize for performance\n\
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PRAGMA journal_mode = WAL;\n\
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PRAGMA synchronous = NORMAL;\n\
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PRAGMA cache_size = 10000;\n\
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\n\
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-- Core events table with hybrid single-table design\n\
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CREATE TABLE events (\n\
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id TEXT PRIMARY KEY, -- Nostr event ID (hex string)\n\
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pubkey TEXT NOT NULL, -- Public key of event author (hex string)\n\
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created_at INTEGER NOT NULL, -- Event creation timestamp (Unix timestamp)\n\
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kind INTEGER NOT NULL, -- Event kind (0-65535)\n\
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event_type TEXT NOT NULL CHECK (event_type IN ('regular', 'replaceable', 'ephemeral', 'addressable')),\n\
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content TEXT NOT NULL, -- Event content (text content only)\n\
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sig TEXT NOT NULL, -- Event signature (hex string)\n\
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tags JSON NOT NULL DEFAULT '[]', -- Event tags as JSON array\n\
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first_seen INTEGER NOT NULL DEFAULT (strftime('%s', 'now')) -- When relay received event\n\
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);\n\
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\n\
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-- Core performance indexes\n\
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CREATE INDEX idx_events_pubkey ON events(pubkey);\n\
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CREATE INDEX idx_events_kind ON events(kind);\n\
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CREATE INDEX idx_events_created_at ON events(created_at DESC);\n\
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CREATE INDEX idx_events_event_type ON events(event_type);\n\
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\n\
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-- Composite indexes for common query patterns\n\
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CREATE INDEX idx_events_kind_created_at ON events(kind, created_at DESC);\n\
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CREATE INDEX idx_events_pubkey_created_at ON events(pubkey, created_at DESC);\n\
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CREATE INDEX idx_events_pubkey_kind ON events(pubkey, kind);\n\
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\n\
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-- Schema information table\n\
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CREATE TABLE schema_info (\n\
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key TEXT PRIMARY KEY,\n\
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value TEXT NOT NULL,\n\
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updated_at INTEGER NOT NULL DEFAULT (strftime('%s', 'now'))\n\
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);\n\
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\n\
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-- Insert schema metadata\n\
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INSERT INTO schema_info (key, value) VALUES\n\
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('version', '3'),\n\
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('description', 'Hybrid single-table Nostr relay schema with JSON tags and configuration management'),\n\
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('created_at', strftime('%s', 'now'));\n\
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\n\
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-- Helper views for common queries\n\
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CREATE VIEW recent_events AS\n\
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SELECT id, pubkey, created_at, kind, event_type, content\n\
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FROM events\n\
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WHERE event_type != 'ephemeral'\n\
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ORDER BY created_at DESC\n\
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LIMIT 1000;\n\
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\n\
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CREATE VIEW event_stats AS\n\
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SELECT \n\
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event_type,\n\
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COUNT(*) as count,\n\
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AVG(length(content)) as avg_content_length,\n\
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MIN(created_at) as earliest,\n\
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MAX(created_at) as latest\n\
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FROM events\n\
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GROUP BY event_type;\n\
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\n\
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-- Optimization: Trigger for automatic cleanup of ephemeral events older than 1 hour\n\
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CREATE TRIGGER cleanup_ephemeral_events\n\
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AFTER INSERT ON events\n\
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WHEN NEW.event_type = 'ephemeral'\n\
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BEGIN\n\
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DELETE FROM events \n\
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WHERE event_type = 'ephemeral' \n\
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AND first_seen < (strftime('%s', 'now') - 3600);\n\
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END;\n\
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\n\
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-- Replaceable event handling trigger\n\
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CREATE TRIGGER handle_replaceable_events\n\
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AFTER INSERT ON events\n\
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WHEN NEW.event_type = 'replaceable'\n\
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BEGIN\n\
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DELETE FROM events \n\
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WHERE pubkey = NEW.pubkey \n\
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AND kind = NEW.kind \n\
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AND event_type = 'replaceable'\n\
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AND id != NEW.id;\n\
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END;\n\
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\n\
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-- Persistent Subscriptions Logging Tables (Phase 2)\n\
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-- Optional database logging for subscription analytics and debugging\n\
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\n\
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-- Subscription events log\n\
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CREATE TABLE subscription_events (\n\
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id INTEGER PRIMARY KEY AUTOINCREMENT,\n\
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subscription_id TEXT NOT NULL, -- Subscription ID from client\n\
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client_ip TEXT NOT NULL, -- Client IP address\n\
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event_type TEXT NOT NULL CHECK (event_type IN ('created', 'closed', 'expired', 'disconnected')),\n\
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filter_json TEXT, -- JSON representation of filters (for created events)\n\
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events_sent INTEGER DEFAULT 0, -- Number of events sent to this subscription\n\
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created_at INTEGER NOT NULL DEFAULT (strftime('%s', 'now')),\n\
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ended_at INTEGER, -- When subscription ended (for closed/expired/disconnected)\n\
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duration INTEGER -- Computed: ended_at - created_at\n\
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);\n\
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\n\
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-- Subscription metrics summary\n\
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CREATE TABLE subscription_metrics (\n\
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id INTEGER PRIMARY KEY AUTOINCREMENT,\n\
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date TEXT NOT NULL, -- Date (YYYY-MM-DD)\n\
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total_created INTEGER DEFAULT 0, -- Total subscriptions created\n\
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total_closed INTEGER DEFAULT 0, -- Total subscriptions closed\n\
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total_events_broadcast INTEGER DEFAULT 0, -- Total events broadcast\n\
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avg_duration REAL DEFAULT 0, -- Average subscription duration\n\
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peak_concurrent INTEGER DEFAULT 0, -- Peak concurrent subscriptions\n\
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updated_at INTEGER NOT NULL DEFAULT (strftime('%s', 'now')),\n\
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UNIQUE(date)\n\
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);\n\
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\n\
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-- Event broadcasting log (optional, for detailed analytics)\n\
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CREATE TABLE event_broadcasts (\n\
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id INTEGER PRIMARY KEY AUTOINCREMENT,\n\
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event_id TEXT NOT NULL, -- Event ID that was broadcast\n\
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subscription_id TEXT NOT NULL, -- Subscription that received it\n\
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client_ip TEXT NOT NULL, -- Client IP\n\
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broadcast_at INTEGER NOT NULL DEFAULT (strftime('%s', 'now')),\n\
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FOREIGN KEY (event_id) REFERENCES events(id)\n\
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);\n\
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\n\
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-- Indexes for subscription logging performance\n\
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CREATE INDEX idx_subscription_events_id ON subscription_events(subscription_id);\n\
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CREATE INDEX idx_subscription_events_type ON subscription_events(event_type);\n\
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CREATE INDEX idx_subscription_events_created ON subscription_events(created_at DESC);\n\
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CREATE INDEX idx_subscription_events_client ON subscription_events(client_ip);\n\
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\n\
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CREATE INDEX idx_subscription_metrics_date ON subscription_metrics(date DESC);\n\
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\n\
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CREATE INDEX idx_event_broadcasts_event ON event_broadcasts(event_id);\n\
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CREATE INDEX idx_event_broadcasts_sub ON event_broadcasts(subscription_id);\n\
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CREATE INDEX idx_event_broadcasts_time ON event_broadcasts(broadcast_at DESC);\n\
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\n\
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-- Trigger to update subscription duration when ended\n\
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CREATE TRIGGER update_subscription_duration\n\
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AFTER UPDATE OF ended_at ON subscription_events\n\
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WHEN NEW.ended_at IS NOT NULL AND OLD.ended_at IS NULL\n\
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BEGIN\n\
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UPDATE subscription_events\n\
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SET duration = NEW.ended_at - NEW.created_at\n\
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WHERE id = NEW.id;\n\
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END;\n\
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\n\
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-- View for subscription analytics\n\
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CREATE VIEW subscription_analytics AS\n\
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SELECT\n\
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date(created_at, 'unixepoch') as date,\n\
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COUNT(*) as subscriptions_created,\n\
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COUNT(CASE WHEN ended_at IS NOT NULL THEN 1 END) as subscriptions_ended,\n\
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AVG(CASE WHEN duration IS NOT NULL THEN duration END) as avg_duration_seconds,\n\
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MAX(events_sent) as max_events_sent,\n\
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AVG(events_sent) as avg_events_sent,\n\
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COUNT(DISTINCT client_ip) as unique_clients\n\
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FROM subscription_events\n\
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GROUP BY date(created_at, 'unixepoch')\n\
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ORDER BY date DESC;\n\
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\n\
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-- View for current active subscriptions (from log perspective)\n\
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CREATE VIEW active_subscriptions_log AS\n\
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SELECT\n\
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subscription_id,\n\
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client_ip,\n\
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filter_json,\n\
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events_sent,\n\
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created_at,\n\
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(strftime('%s', 'now') - created_at) as duration_seconds\n\
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FROM subscription_events\n\
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WHERE event_type = 'created'\n\
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AND subscription_id NOT IN (\n\
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SELECT subscription_id FROM subscription_events\n\
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WHERE event_type IN ('closed', 'expired', 'disconnected')\n\
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);\n\
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\n\
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-- ================================\n\
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-- CONFIGURATION MANAGEMENT TABLES\n\
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-- ================================\n\
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\n\
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-- Core server configuration table\n\
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CREATE TABLE config (\n\
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key TEXT PRIMARY KEY, -- Configuration key (unique identifier)\n\
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value TEXT NOT NULL, -- Configuration value (stored as string)\n\
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description TEXT, -- Human-readable description\n\
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config_type TEXT DEFAULT 'user' CHECK (config_type IN ('system', 'user', 'runtime')),\n\
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data_type TEXT DEFAULT 'string' CHECK (data_type IN ('string', 'integer', 'boolean', 'json')),\n\
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validation_rules TEXT, -- JSON validation rules (optional)\n\
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is_sensitive INTEGER DEFAULT 0, -- 1 if value should be masked in logs\n\
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requires_restart INTEGER DEFAULT 0, -- 1 if change requires server restart\n\
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created_at INTEGER NOT NULL DEFAULT (strftime('%s', 'now')),\n\
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updated_at INTEGER NOT NULL DEFAULT (strftime('%s', 'now'))\n\
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);\n\
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\n\
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-- Configuration change history table\n\
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CREATE TABLE config_history (\n\
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id INTEGER PRIMARY KEY AUTOINCREMENT,\n\
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config_key TEXT NOT NULL, -- Key that was changed\n\
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old_value TEXT, -- Previous value (NULL for new keys)\n\
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new_value TEXT NOT NULL, -- New value\n\
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changed_by TEXT DEFAULT 'system', -- Who made the change (system/admin/user)\n\
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change_reason TEXT, -- Optional reason for change\n\
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changed_at INTEGER NOT NULL DEFAULT (strftime('%s', 'now')),\n\
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FOREIGN KEY (config_key) REFERENCES config(key)\n\
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);\n\
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\n\
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-- Configuration validation errors log\n\
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CREATE TABLE config_validation_log (\n\
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id INTEGER PRIMARY KEY AUTOINCREMENT,\n\
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config_key TEXT NOT NULL,\n\
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attempted_value TEXT,\n\
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validation_error TEXT NOT NULL,\n\
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error_source TEXT DEFAULT 'validation', -- validation/parsing/constraint\n\
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attempted_at INTEGER NOT NULL DEFAULT (strftime('%s', 'now'))\n\
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);\n\
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\n\
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-- Cache for file-based configuration events\n\
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CREATE TABLE config_file_cache (\n\
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file_path TEXT PRIMARY KEY, -- Full path to config file\n\
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file_hash TEXT NOT NULL, -- SHA256 hash of file content\n\
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event_id TEXT, -- Nostr event ID from file\n\
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event_pubkey TEXT, -- Admin pubkey that signed event\n\
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loaded_at INTEGER NOT NULL DEFAULT (strftime('%s', 'now')),\n\
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validation_status TEXT CHECK (validation_status IN ('valid', 'invalid', 'unverified')),\n\
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validation_error TEXT -- Error details if invalid\n\
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);\n\
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\n\
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-- Performance indexes for configuration tables\n\
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CREATE INDEX idx_config_type ON config(config_type);\n\
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CREATE INDEX idx_config_updated ON config(updated_at DESC);\n\
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CREATE INDEX idx_config_history_key ON config_history(config_key);\n\
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CREATE INDEX idx_config_history_time ON config_history(changed_at DESC);\n\
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CREATE INDEX idx_config_validation_key ON config_validation_log(config_key);\n\
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CREATE INDEX idx_config_validation_time ON config_validation_log(attempted_at DESC);\n\
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\n\
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-- Trigger to update timestamp on configuration changes\n\
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CREATE TRIGGER update_config_timestamp\n\
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AFTER UPDATE ON config\n\
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BEGIN\n\
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UPDATE config SET updated_at = strftime('%s', 'now') WHERE key = NEW.key;\n\
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END;\n\
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\n\
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-- Trigger to log configuration changes to history\n\
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CREATE TRIGGER log_config_changes\n\
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AFTER UPDATE ON config\n\
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WHEN OLD.value != NEW.value\n\
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BEGIN\n\
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INSERT INTO config_history (config_key, old_value, new_value, changed_by, change_reason)\n\
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VALUES (NEW.key, OLD.value, NEW.value, 'system', 'configuration update');\n\
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END;\n\
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\n\
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-- Active Configuration View\n\
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CREATE VIEW active_config AS\n\
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SELECT\n\
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key,\n\
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value,\n\
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description,\n\
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config_type,\n\
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data_type,\n\
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requires_restart,\n\
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updated_at\n\
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FROM config\n\
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WHERE config_type IN ('system', 'user')\n\
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ORDER BY config_type, key;\n\
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\n\
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-- Runtime Statistics View\n\
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CREATE VIEW runtime_stats AS\n\
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SELECT\n\
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key,\n\
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value,\n\
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description,\n\
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updated_at\n\
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FROM config\n\
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WHERE config_type = 'runtime'\n\
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ORDER BY key;\n\
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\n\
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-- Configuration Change Summary\n\
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CREATE VIEW recent_config_changes AS\n\
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SELECT\n\
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ch.config_key,\n\
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sc.description,\n\
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ch.old_value,\n\
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ch.new_value,\n\
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ch.changed_by,\n\
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ch.change_reason,\n\
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ch.changed_at\n\
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FROM config_history ch\n\
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JOIN config sc ON ch.config_key = sc.key\n\
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ORDER BY ch.changed_at DESC\n\
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LIMIT 50;\n\
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\n\
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-- Runtime Statistics (initialized by server on startup)\n\
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-- These will be populated when configuration system initializes";
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#endif /* SQL_SCHEMA_H */ |