import { Command } from "commander";
import { CacheManager } from "../services/index.js";
const cache = new CacheManager();
export function createCacheCommand(): Command {
const cacheCmd = new Command("cache").description("Manage output cache");
// Stats subcommand
cacheCmd
.command("stats")
.description("Show cache statistics")
.option("--json", "Output as JSON")
.action((options) => {
try {
const stats = cache.getStats();
if (options.json) {
console.log(JSON.stringify(stats, null, 2));
} else {
console.log("Cache Statistics");
console.log("================");
console.log(`Entries: ${stats.entryCount}`);
console.log(`Total size: ${formatBytes(stats.totalSizeBytes)}`);
console.log(`Max entries: ${stats.config.maxEntries}`);
console.log(`Default TTL: ${formatMs(stats.config.defaultTtlMs)}`);
if (Object.keys(stats.typeBreakdown).length > 0) {
console.log("\nBy type:");
for (const [type, count] of Object.entries(stats.typeBreakdown)) {
console.log(` ${type}: ${count}`);
}
}
}
} catch (error) {
const errorMessage = error instanceof Error ? error.message : String(error);
console.error(`Error: ${errorMessage}`);
process.exit(1);
}
});
// Get subcommand
cacheCmd
.command("get <cacheId>")
.description("Get cached entry by ID")
.option("--json", "Output as JSON")
.action((cacheId, options) => {
try {
const entry = cache.get(cacheId);
if (!entry) {
console.error(`Cache entry not found: ${cacheId}`);
process.exit(1);
}
if (options.json) {
console.log(
JSON.stringify(
{
id: cacheId,
data: entry.data,
metadata: entry.metadata,
expiresAt: entry.expiresAt,
},
null,
2
)
);
} else {
console.log(`Cache ID: ${cacheId}`);
console.log(`Type: ${entry.metadata.type}`);
console.log(`Created: ${new Date(entry.metadata.createdAt).toISOString()}`);
console.log(`Expires: ${new Date(entry.expiresAt).toISOString()}`);
console.log(`Size: ${formatBytes(entry.metadata.sizeBytes ?? 0)}`);
console.log("\nData:");
console.log(JSON.stringify(entry.data, null, 2));
}
} catch (error) {
const errorMessage = error instanceof Error ? error.message : String(error);
console.error(`Error: ${errorMessage}`);
process.exit(1);
}
});
// Clear subcommand
cacheCmd
.command("clear")
.description("Clear all cached data")
.option("--json", "Output as JSON")
.action((options) => {
try {
const statsBefore = cache.getStats();
const entriesCleared = statsBefore.entryCount;
cache.clearAll();
if (options.json) {
console.log(
JSON.stringify(
{
cleared: true,
entriesCleared,
},
null,
2
)
);
} else {
console.log(`Cleared ${entriesCleared} cache entries`);
}
} catch (error) {
const errorMessage = error instanceof Error ? error.message : String(error);
console.error(`Error: ${errorMessage}`);
process.exit(1);
}
});
return cacheCmd;
}
function formatBytes(bytes: number): string {
if (bytes === 0) return "0 B";
const units = ["B", "KB", "MB", "GB"];
const i = Math.floor(Math.log(bytes) / Math.log(1024));
return `${(bytes / Math.pow(1024, i)).toFixed(i > 0 ? 1 : 0)} ${units[i]}`;
}
function formatMs(ms: number): string {
if (ms < 1000) return `${ms}ms`;
if (ms < 60000) return `${(ms / 1000).toFixed(0)}s`;
return `${(ms / 60000).toFixed(0)}m`;
}
