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\"\";\nconst SLACK_BOT_TOKEN = Deno.env.get(\"SLACK_BOT_TOKEN\") ?? \"\";\nconst FREEPIK_API_KEY = Deno.env.get(\"FREEPIK_API_KEY\") ?? \"\";\nconst FREEPIK_WEBHOOK_SECRET = Deno.env.get(\"FREEPIK_WEBHOOK_SECRET\") ?? \"\";\nconst SLACK_ALLOWED_CHANNELS = (Deno.env.get(\"SLACK_ALLOWED_CHANNELS\") ?? \"\")\n .split(\",\")\n .map((value) => value.trim())\n .filter(Boolean);\nconst WEBHOOK_BASE_URL =\n Deno.env.get(\"WEBHOOK_BASE_URL\") ??\n \"https://kuririn--59ffd488f3bd11f0b0e542dde27851f2.web.val.run\";\nconst DEFAULT_PARAMS = {\n skin_detail: 80,\n smart_grain: 2,\n sharpen: 0,\n};\n\nexport default async function handler(req: Request): Promise {\n const url = new URL(req.url);\n\n if (req.method === \"GET\" && url.pathname === \"/\") {\n return new Response(\"ok\", { status: 200 });\n }\n\n if (url.pathname === \"/slack/events\" && req.method === \"POST\") {\n return await handleSlackEvents(req);\n }\n\n if (url.pathname === \"/slack/interactions\" && req.method === \"POST\") {\n return await handleSlackInteractions(req);\n }\n\n if (url.pathname === \"/freepik/webhook\" && req.method === \"POST\") {\n return await handleFreepikWebhook(req);\n }\n\n if (url.pathname === \"/freepik/tasks\" && req.method === \"GET\") {\n return await handleFreepikTasks(req);\n }\n\n return new Response(\"not found\", { status: 404 });\n}\n\nasync function handleSlackEvents(req: Request): Promise {\n const rawBody = await req.text();\n const payload = safeJsonParse(rawBody);\n if (!payload) {\n return new Response(\"Invalid JSON\", { status: 400 });\n }\n\n if (payload.type === \"url_verification\") {\n if (SLACK_SIGNING_SECRET) {\n const isValid = await verifySlackSignature(req, rawBody);\n if (!isValid) {\n return new Response(\"Invalid signature\", { status: 401 });\n }\n }\n return Response.json({ challenge: payload.challenge });\n }\n\n if (!SLACK_SIGNING_SECRET || !SLACK_BOT_TOKEN || !FREEPIK_API_KEY) {\n return new Response(\"Missing required secrets\", { status: 500 });\n }\n\n const isValid = await verifySlackSignature(req, rawBody);\n if (!isValid) {\n return new Response(\"Invalid signature\", { status: 401 });\n }\n\n // Avoid duplicate processing on Slack retries\n if (req.headers.get(\"x-slack-retry-num\")) {\n return new Response(\"Retry ignored\", { status: 200 });\n }\n\n if (payload.type !== \"event_callback\") {\n return new Response(\"ok\", { status: 200 });\n }\n\n const event = payload.event ?? {};\n if (event.type !== \"message\") {\n return new Response(\"ok\", { status: 200 });\n }\n\n const subtype = event.subtype as string | undefined;\n if ((subtype && subtype !== \"file_share\") || event.bot_id) {\n return new Response(\"ok\", { status: 200 });\n }\n\n const channel = event.channel as string | undefined;\n const threadTs = (event.thread_ts ?? event.ts) as string | undefined;\n\n if (!channel || !threadTs) {\n return new Response(\"ok\", { status: 200 });\n }\n\n if (SLACK_ALLOWED_CHANNELS.length > 0 && !SLACK_ALLOWED_CHANNELS.includes(channel)) {\n return new Response(\"ok\", { status: 200 });\n }\n\n const files = Array.isArray(event.files) ? event.files : [];\n const imageFile = files.find((file: Record) => {\n const mimetype = String(file.mimetype ?? \"\");\n const filetype = String(file.filetype ?? \"\");\n return mimetype.startsWith(\"image/\") || filetype.startsWith(\"image\");\n });\n\n if (!imageFile) {\n return new Response(\"ok\", { status: 200 });\n }\n\n queueMicrotask(() => {\n postConfigMessage({\n file: imageFile as SlackFile,\n channel,\n threadTs,\n }).catch((error) => {\n console.error(\"Config message failed\", error);\n });\n });\n\n return new Response(\"ok\", { status: 200 });\n}\n\nasync function handleSlackInteractions(req: Request): Promise {\n if (!SLACK_SIGNING_SECRET || !SLACK_BOT_TOKEN || !FREEPIK_API_KEY) {\n return new Response(\"Missing required secrets\", { status: 500 });\n }\n\n const rawBody = await req.text();\n const isValid = await verifySlackSignature(req, rawBody);\n if (!isValid) {\n return new Response(\"Invalid signature\", { status: 401 });\n }\n\n const params = new URLSearchParams(rawBody);\n const payloadRaw = params.get(\"payload\");\n if (!payloadRaw) {\n return new Response(\"Missing payload\", { status: 400 });\n }\n\n const payload = safeJsonParse(payloadRaw);\n if (!payload) {\n return new Response(\"Invalid JSON\", { status: 400 });\n }\n\n if (payload.type === \"block_actions\") {\n const action = Array.isArray(payload.actions) ? payload.actions[0] : null;\n const actionId = action?.action_id as string | undefined;\n const value = action?.value as string | undefined;\n const context = value ? safeJsonParse(value) : null;\n\n if (!context) {\n return new Response(\"ok\", { status: 200 });\n }\n if (typeof context.file_id !== \"string\") {\n return new Response(\"ok\", { status: 200 });\n }\n\n if (actionId === \"use_defaults\") {\n queueMicrotask(() => {\n processImageWithParams({\n fileId: context.file_id as string,\n channel: context.channel,\n threadTs: context.threadTs,\n params: DEFAULT_PARAMS,\n }).catch((error) => {\n console.error(\"Processing failed\", error);\n });\n });\n }\n\n if (actionId === \"custom_params\") {\n const triggerId = payload.trigger_id as string | undefined;\n if (triggerId) {\n await openCustomModal(triggerId, context);\n }\n }\n\n return new Response(\"\", { status: 200 });\n }\n\n if (payload.type === \"view_submission\") {\n const contextRaw = payload.view?.private_metadata as string | undefined;\n const context = contextRaw ? safeJsonParse(contextRaw) : null;\n if (!context) {\n return new Response(\"\", { status: 200 });\n }\n if (typeof context.file_id !== \"string\") {\n return new Response(\"\", { status: 200 });\n }\n\n const values = payload.view?.state?.values ?? {};\n const params = extractParams(values);\n\n queueMicrotask(() => {\n processImageWithParams({\n fileId: context.file_id as string,\n channel: context.channel,\n threadTs: context.threadTs,\n params,\n }).catch((error) => {\n console.error(\"Processing failed\", error);\n });\n });\n\n return Response.json({ response_action: \"clear\" });\n }\n\n return new Response(\"\", { status: 200 });\n}\n\nasync function handleFreepikWebhook(req: Request): Promise {\n const url = new URL(req.url);\n const token = url.searchParams.get(\"token\") ?? \"\";\n if (FREEPIK_WEBHOOK_SECRET && token !== FREEPIK_WEBHOOK_SECRET) {\n return new Response(\"Unauthorized\", { status: 401 });\n }\n\n const payload = await req.json().catch(() => null);\n if (!payload) {\n return new Response(\"Invalid JSON\", { status: 400 });\n }\n\n const data = payload.data ?? payload;\n const status = data.status as string | undefined;\n const generated = data.generated as string[] | undefined;\n const taskId = data.task_id as string | undefined;\n\n console.log(\"Freepik webhook\", { status, taskId });\n\n if (status !== \"COMPLETED\" || !generated || generated.length === 0) {\n if (status === \"FAILED\") {\n await postSlackMessage({\n channel: url.searchParams.get(\"channel\") ?? \"\",\n threadTs: url.searchParams.get(\"thread_ts\") ?? undefined,\n text: \"Skin enhancer failed to process the image.\",\n });\n }\n return new Response(\"ok\", { status: 200 });\n }\n\n const channel = url.searchParams.get(\"channel\") ?? \"\";\n const threadTs = url.searchParams.get(\"thread_ts\") ?? undefined;\n if (!channel) {\n return new Response(\"Missing channel\", { status: 400 });\n }\n\n const imageUrl = generated[0];\n await postSlackMessage({\n channel,\n threadTs,\n text: `Enhanced image ready: ${imageUrl}`,\n });\n\n return new Response(\"ok\", { status: 200 });\n}\n\nasync function handleFreepikTasks(req: Request): Promise {\n const url = new URL(req.url);\n const token = url.searchParams.get(\"token\") ?? \"\";\n if (!FREEPIK_WEBHOOK_SECRET || token !== FREEPIK_WEBHOOK_SECRET) {\n return new Response(\"Unauthorized\", { status: 401 });\n }\n\n if (!FREEPIK_API_KEY) {\n return new Response(\"Missing Freepik API key\", { status: 500 });\n }\n\n const taskId = url.searchParams.get(\"task_id\");\n const endpoint = taskId\n ? `https://api.freepik.com/v1/ai/skin-enhancer/${taskId}`\n : \"https://api.freepik.com/v1/ai/skin-enhancer\";\n\n const response = await fetch(endpoint, {\n headers: {\n \"x-freepik-api-key\": FREEPIK_API_KEY,\n },\n });\n\n const body = await response.text();\n return new Response(body, {\n status: response.status,\n headers: {\n \"Content-Type\": response.headers.get(\"content-type\") ?? \"application/json\",\n },\n });\n}\n\nasync function postConfigMessage(params: {\n file: SlackFile;\n channel: string;\n threadTs: string;\n}): Promise {\n const { file, channel, threadTs } = params;\n if (!file.id) {\n await postSlackMessage({\n channel,\n threadTs,\n text: \"Nie mogę odczytać ID pliku ze Slacka. Spróbuj wrzucić obraz ponownie.\",\n });\n return;\n }\n const context = {\n file_id: file.id,\n channel,\n threadTs,\n };\n\n const blocks = [\n {\n type: \"section\",\n text: {\n type: \"plain_text\",\n text: \"Skin Enhancer — domyślne ustawienia\",\n },\n },\n {\n type: \"section\",\n fields: [\n {\n type: \"plain_text\",\n text: `skin_detail: ${DEFAULT_PARAMS.skin_detail}`,\n },\n {\n type: \"plain_text\",\n text: `smart_grain: ${DEFAULT_PARAMS.smart_grain}`,\n },\n {\n type: \"plain_text\",\n text: `sharpen: ${DEFAULT_PARAMS.sharpen}`,\n },\n ],\n },\n {\n type: \"actions\",\n elements: [\n {\n type: \"button\",\n text: { type: \"plain_text\", text: \"Użyj domyślnych\" },\n action_id: \"use_defaults\",\n value: JSON.stringify(context),\n },\n {\n type: \"button\",\n text: { type: \"plain_text\", text: \"Użyj custom\" },\n action_id: \"custom_params\",\n value: JSON.stringify(context),\n },\n ],\n },\n ];\n\n await postSlackMessage({\n channel,\n threadTs,\n text: \"Wybierz ustawienia Skin Enhancer.\",\n blocks,\n });\n}\n\nasync function openCustomModal(triggerId: string, context: Record): Promise {\n const response = await fetch(\"https://slack.com/api/views.open\", {\n method: \"POST\",\n headers: {\n Authorization: `Bearer ${SLACK_BOT_TOKEN}`,\n \"Content-Type\": \"application/json; charset=utf-8\",\n },\n body: JSON.stringify({\n trigger_id: triggerId,\n view: {\n type: \"modal\",\n callback_id: \"skin_enhancer_custom\",\n private_metadata: JSON.stringify(context),\n title: { type: \"plain_text\", text: \"Skin Enhancer\" },\n submit: { type: \"plain_text\", text: \"Start\" },\n close: { type: \"plain_text\", text: \"Anuluj\" },\n blocks: [\n {\n type: \"input\",\n block_id: \"skin_detail\",\n label: { type: \"plain_text\", text: \"skin_detail (0-100)\" },\n element: {\n type: \"plain_text_input\",\n action_id: \"value\",\n initial_value: String(DEFAULT_PARAMS.skin_detail),\n },\n },\n {\n type: \"input\",\n block_id: \"smart_grain\",\n label: { type: \"plain_text\", text: \"smart_grain (0-100)\" },\n element: {\n type: \"plain_text_input\",\n action_id: \"value\",\n initial_value: String(DEFAULT_PARAMS.smart_grain),\n },\n },\n {\n type: \"input\",\n block_id: \"sharpen\",\n label: { type: \"plain_text\", text: \"sharpen (0-100)\" },\n element: {\n type: \"plain_text_input\",\n action_id: \"value\",\n initial_value: String(DEFAULT_PARAMS.sharpen),\n },\n },\n ],\n },\n }),\n });\n\n const body = await response.json().catch(() => null);\n if (!response.ok || !body?.ok) {\n console.error(\"Slack views.open failed\", body ?? (await response.text()));\n }\n}\n\nfunction extractParams(values: Record): {\n skin_detail: number;\n smart_grain: number;\n sharpen: number;\n} {\n const readValue = (blockId: string) => {\n const block = values?.[blockId] as Record | undefined;\n const actionCandidate = block\n ? (block.value ?? Object.values(block)[0])\n : undefined;\n const action = actionCandidate as Record | undefined;\n const raw = action?.value as string | undefined;\n const parsed = Number(raw);\n if (!Number.isFinite(parsed)) return null;\n return Math.max(0, Math.min(100, Math.round(parsed)));\n };\n\n return {\n skin_detail: readValue(\"skin_detail\") ?? DEFAULT_PARAMS.skin_detail,\n smart_grain: readValue(\"smart_grain\") ?? DEFAULT_PARAMS.smart_grain,\n sharpen: readValue(\"sharpen\") ?? DEFAULT_PARAMS.sharpen,\n };\n}\n\nasync function processImageWithParams(params: {\n fileId: string;\n channel: string;\n threadTs: string;\n params: {\n skin_detail?: number;\n smart_grain?: number;\n sharpen?: number;\n };\n}): Promise {\n const { fileId, channel, threadTs, params: settings } = params;\n\n await postSlackMessage({\n channel,\n threadTs,\n text: \"Processing image with Freepik Skin Enhancer...\",\n });\n\n const fileInfo = await fetchSlackFileInfo(fileId);\n const downloadUrl = fileInfo?.url_private_download ?? fileInfo?.url_private;\n if (!downloadUrl) {\n await postSlackMessage({\n channel,\n threadTs,\n text: \"No downloadable URL for this image.\",\n });\n return;\n }\n\n const slackResponse = await fetch(downloadUrl, {\n headers: {\n Authorization: `Bearer ${SLACK_BOT_TOKEN}`,\n },\n });\n\n if (!slackResponse.ok) {\n await postSlackMessage({\n channel,\n threadTs,\n text: \"Failed to download image from Slack.\",\n });\n return;\n }\n\n const imageBytes = await slackResponse.arrayBuffer();\n const imageBase64 = arrayBufferToBase64(imageBytes);\n\n const webhookUrl = new URL(\"/freepik/webhook\", WEBHOOK_BASE_URL);\n webhookUrl.searchParams.set(\"channel\", channel);\n webhookUrl.searchParams.set(\"thread_ts\", threadTs);\n if (FREEPIK_WEBHOOK_SECRET) {\n webhookUrl.searchParams.set(\"token\", FREEPIK_WEBHOOK_SECRET);\n }\n\n const requestBody: Record = {\n image: imageBase64,\n webhook_url: webhookUrl.toString(),\n };\n if (typeof settings.skin_detail === \"number\") {\n requestBody.skin_detail = settings.skin_detail;\n }\n if (typeof settings.smart_grain === \"number\") {\n requestBody.smart_grain = settings.smart_grain;\n }\n if (typeof settings.sharpen === \"number\") {\n requestBody.sharpen = settings.sharpen;\n }\n\n const createResponse = await fetch(\n \"https://api.freepik.com/v1/ai/skin-enhancer/faithful\",\n {\n method: \"POST\",\n headers: {\n \"Content-Type\": \"application/json\",\n \"x-freepik-api-key\": FREEPIK_API_KEY,\n },\n body: JSON.stringify(requestBody),\n },\n );\n\n if (!createResponse.ok) {\n const errorText = await createResponse.text().catch(() => \"\");\n await postSlackMessage({\n channel,\n threadTs,\n text: `Freepik request failed: ${createResponse.status} ${errorText}`,\n });\n return;\n }\n\n const createPayload = await createResponse.json().catch(() => null);\n const data = createPayload?.data ?? {};\n const status = data.status as string | undefined;\n const generated = data.generated as string[] | undefined;\n const taskId = data.task_id as string | undefined;\n\n console.log(\"Freepik task created\", { status, taskId });\n\n if (taskId) {\n await postSlackMessage({\n channel,\n threadTs,\n text: `Freepik task created: ${taskId} (status: ${status ?? \"unknown\"})`,\n });\n }\n\n if (status === \"COMPLETED\" && generated && generated.length > 0) {\n await postSlackMessage({\n channel,\n threadTs,\n text: `Enhanced image ready: ${generated[0]}`,\n });\n return;\n }\n}\n\nasync function postSlackMessage(params: {\n channel: string;\n threadTs?: string;\n text: string;\n blocks?: unknown[];\n}): Promise {\n if (!params.channel) return;\n\n const response = await fetch(\"https://slack.com/api/chat.postMessage\", {\n method: \"POST\",\n headers: {\n Authorization: `Bearer ${SLACK_BOT_TOKEN}`,\n \"Content-Type\": \"application/json; charset=utf-8\",\n },\n body: JSON.stringify({\n channel: params.channel,\n text: params.text,\n thread_ts: params.threadTs,\n blocks: params.blocks,\n }),\n });\n\n const body = await response.json().catch(() => null);\n if (!response.ok || !body?.ok) {\n console.error(\"Slack postMessage failed\", body ?? (await response.text()));\n }\n}\n\nasync function fetchSlackFileInfo(fileId: string): Promise {\n const response = await fetch(\n `https://slack.com/api/files.info?file=${encodeURIComponent(fileId)}`,\n {\n headers: {\n Authorization: `Bearer ${SLACK_BOT_TOKEN}`,\n },\n },\n );\n\n const body = await response.json().catch(() => null);\n if (!response.ok || !body?.ok) {\n console.error(\"Slack files.info failed\", body ?? (await response.text()));\n return null;\n }\n return body.file as SlackFile;\n}\n\nfunction safeJsonParse(input: string): Record | null {\n try {\n return JSON.parse(input);\n } catch {\n return null;\n }\n}\n\nasync function verifySlackSignature(req: Request, rawBody: string): Promise {\n const timestamp = req.headers.get(\"x-slack-request-timestamp\");\n const signature = req.headers.get(\"x-slack-signature\");\n if (!timestamp || !signature) {\n return false;\n }\n\n const now = Math.floor(Date.now() / 1000);\n const ts = Number(timestamp);\n if (!Number.isFinite(ts) || Math.abs(now - ts) > 60 * 5) {\n return false;\n }\n\n const baseString = `v0:${timestamp}:${rawBody}`;\n const key = await crypto.subtle.importKey(\n \"raw\",\n new TextEncoder().encode(SLACK_SIGNING_SECRET),\n { name: \"HMAC\", hash: \"SHA-256\" },\n false,\n [\"sign\"],\n );\n const signatureBuffer = await crypto.subtle.sign(\n \"HMAC\",\n key,\n new TextEncoder().encode(baseString),\n );\n const computedSignature = `v0=${toHex(signatureBuffer)}`;\n return timingSafeEqual(computedSignature, signature);\n}\n\nfunction toHex(buffer: ArrayBuffer): string {\n return Array.from(new Uint8Array(buffer))\n .map((byte) => byte.toString(16).padStart(2, \"0\"))\n .join(\"\");\n}\n\nfunction timingSafeEqual(a: string, b: string): boolean {\n if (a.length !== b.length) return false;\n let result = 0;\n for (let i = 0; i < a.length; i += 1) {\n result |= a.charCodeAt(i) ^ b.charCodeAt(i);\n }\n return result === 0;\n}\n\nfunction arrayBufferToBase64(buffer: ArrayBuffer): string {\n const bytes = new Uint8Array(buffer);\n const chunkSize = 0x8000;\n let binary = \"\";\n for (let i = 0; i < bytes.length; i += chunkSize) {\n binary += String.fromCharCode(...bytes.subarray(i, i + chunkSize));\n }\n return btoa(binary);\n}\n\ntype SlackFile = {\n id?: string;\n name?: string;\n mimetype?: string;\n filetype?: string;\n url_private?: string;\n url_private_download?: string;\n};\n","deleted","label","children",[],[152],"files",[150],"counts",{"_175":32,"_176":177,"_178":32,"_179":180,"_184":185},"pulls","branches",1,"forks","envVars",{"_181":182,"_183":32},"count",5,"emptyCount","connections",{"_181":32,"_186":32},"unfilledCount","contents",[189],{"_103":151,"_96":152,"_153":154,"_155":-5,"_156":138,"_157":137,"_158":159,"_105":190,"_100":161,"_162":163,"_164":165,"_166":22,"_167":-5,"_99":191},["D",1768670517838],[152],"file","upstreamProject","upstreamBranch","emptyEnvVars","isNew","flags",[],"routes/_app.x.$handle.$name.environment-variables",{"_94":95,"_96":97,"_101":201,"_179":206,"_227":22},{"_103":104,"_96":97,"_105":202,"_107":-5,"_108":22,"_109":110,"_111":73,"_112":-5,"_14":113,"_114":-5,"_115":22,"_116":-5,"_117":-5,"_118":32,"_16":119,"_120":121,"_122":121,"_123":124,"_125":124,"_126":124,"_127":121,"_128":121,"_23":203,"_132":204,"_135":205,"_147":22},["D",1768665374593],{"_94":95,"_130":131},{"_94":95,"_134":131,"_14":113},{"_100":137,"_96":44,"_103":138,"_139":104,"_140":-5,"_141":-5,"_142":-5,"_143":-5,"_144":-5,"_145":97,"_146":95},[207,213,216,219,223],{"_208":209,"_105":210,"_211":-5,"_111":73,"_212":22},"key","FREEPIK_API_KEY",["D",1768666735315],"updatedAt","isEmpty",{"_208":214,"_105":215,"_211":-5,"_111":73,"_212":22},"SLACK_BOT_TOKEN",["D",1768666714923],{"_208":217,"_105":218,"_211":-5,"_111":73,"_212":22},"SLACK_SIGNING_SECRET",["D",1768666695782],{"_208":220,"_105":221,"_211":-5,"_111":222,"_212":22},"SLACK_ALLOWED_CHANNELS",["D",1768666634994],"Allowed Slack channel IDs",{"_208":224,"_105":225,"_211":-5,"_111":226,"_212":22},"FREEPIK_WEBHOOK_SECRET",["D",1768666634717],"Freepik webhook shared secret","isTeamOrg","actionData","errors"]

kuririn

slackSkinEnhancerBot

Environment variables