svelte-llm

// Types import type { RequestHandler } from './$types' // Utils import { error } from '@sveltejs/kit' import { presets } from '$lib/presets' import { dev } from '$app/environment' import { getPresetContent } from '$lib/presetCache' import { PresetDbService } from '$lib/server/presetDb' import { DistillablePreset } from '$lib/types/db' import { logAlways, logErrorAlways } from '$lib/log' // Valid virtual presets that aren't in the presets object - now using enum values const VIRTUAL_DISTILLED_PRESETS = [ DistillablePreset.SVELTE_DISTILLED, DistillablePreset.SVELTEKIT_DISTILLED ] export const GET: RequestHandler = async ({ params, url }) => { const presetNames = params.preset.split(',').map((p) => p.trim()) logAlways(`Received request for presets: ${presetNames.join(', ')}`) // Validate all preset names first const invalidPresets = presetNames.filter( (name) => !(name in presets) && !VIRTUAL_DISTILLED_PRESETS.includes(name as DistillablePreset) ) if (invalidPresets.length > 0) { error(400, `Invalid preset(s): "${invalidPresets.join('", "')}"`) } try { // Determine which version of the distilled doc to use const version = url.searchParams.get('version') || 'latest' // Separate distilled and regular presets const distilledPresetNames = presetNames.filter( (name) => presets[name]?.distilled || VIRTUAL_DISTILLED_PRESETS.includes(name as DistillablePreset) ) const regularPresetNames = presetNames.filter( (name) => !presets[name]?.distilled && !VIRTUAL_DISTILLED_PRESETS.includes(name as DistillablePreset) ) const contentMap = new Map<string, string>() // Handle distilled presets individually (they come from the database) for (const presetKey of distilledPresetNames) { try { const dbDistillation = await PresetDbService.getDistillationByVersion(presetKey, version) if (!dbDistillation || !dbDistillation.content) { throw new Error( `Failed to read distilled content for ${presetKey} version ${version}. Make sure to run the distillation process first.` ) } contentMap.set(presetKey, dbDistillation.content) } catch (e) { logErrorAlways(`Error fetching distilled preset ${presetKey}:`, e) throw e } } // Handle regular presets - generate on-demand from content table for (const presetKey of regularPresetNames) { logAlways(`Generating content for preset ${presetKey} on-demand`) const content = await getPresetContent(presetKey) if (!content) { // This should rarely happen now that we have automatic syncing logErrorAlways(`Failed to generate content for ${presetKey}`) throw new Error( `Failed to generate content for ${presetKey}. The repository may still be syncing, please try again in a few moments.` ) } contentMap.set(presetKey, content) } // Build the final response in the order requested const contents: string[] = [] for (const presetKey of presetNames) { const content = contentMap.get(presetKey) if (!content) { throw new Error(`No content found for ${presetKey}`) } logAlways(`Content length for ${presetKey}: ${content.length}`) // Add the prompt if it exists and we're not using a distilled preset // (distilled presets already have the prompt added) const finalContent = !presets[presetKey]?.distilled && !VIRTUAL_DISTILLED_PRESETS.includes(presetKey as DistillablePreset) && presets[presetKey]?.prompt ? `${content}\n\nInstructions for LLMs: <s>${presets[presetKey].prompt}</s>` : content contents.push(finalContent) } // Join all contents with a delimiter const response = contents.join('\n\n---\n\n') logAlways(`Final combined response length: ${response.length}`) const headers: HeadersInit = { 'Content-Type': 'text/plain; charset=utf-8', 'Cache-Control': 'no-cache' // Ensure fresh content on each request } // Serve as a download if not in development mode if (!dev) { headers['Content-Disposition'] = `attachment; filename="${presetNames.join('-')}.txt"` } return new Response(response, { status: 200, headers }) } catch (e) { logErrorAlways(`Error fetching documentation for presets [${presetNames.join(', ')}]:`, e) const errorMessage = e instanceof Error ? e.message : 'An unexpected error occurred' error(500, errorMessage) } }