Add Docker support and installation guide for easy server deployment

Includes a Dockerfile for building the application image and an INSTALLATION.md file detailing the setup process, prerequisites, and helpful commands for managing the application on a private server.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: ae4037a0-2a6f-4530-9bac-79b543286bda
Replit-Commit-Checkpoint-Type: intermediate_checkpoint
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/397bca8c-984f-43ff-841a-10897aeb8140/ae4037a0-2a6f-4530-9bac-79b543286bda/ds3R7vP

server/services/imageProcessor.ts

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+import sharp from "sharp";
+import { randomUUID } from "crypto";
+import path from "path";
+import fs from "fs/promises";
+
+interface CropDimensions {
+  width: number;
+  height: number;
+}
+
+interface ProcessedImages {
+  facebookFeed: string;
+  instagramFeed: string;
+  instagramStory: string;
+}
+
+const CROP_FORMATS = {
+  facebookFeed: { width: 1200, height: 630 } as CropDimensions,
+  instagramFeed: { width: 1080, height: 1080 } as CropDimensions,
+  instagramStory: { width: 1080, height: 1920 } as CropDimensions,
+};
+
+export class ImageProcessor {
+  private uploadsDir: string;
+
+  constructor() {
+    this.uploadsDir = path.join(process.cwd(), "uploads");
+    this.ensureUploadsDirExists();
+  }
+
+  private async ensureUploadsDirExists() {
+    try {
+      await fs.access(this.uploadsDir);
+    } catch {
+      await fs.mkdir(this.uploadsDir, { recursive: true });
+    }
+  }
+
+  async processImage(buffer: Buffer, originalFilename: string): Promise<ProcessedImages> {
+    const fileExt = path.extname(originalFilename);
+    const baseId = randomUUID();
+
+    const processedImages: ProcessedImages = {
+      facebookFeed: "",
+      instagramFeed: "",
+      instagramStory: "",
+    };
+
+    // Process Facebook Feed (1200x630)
+    const fbFeedFilename = `${baseId}-fb-feed${fileExt}`;
+    const fbFeedPath = path.join(this.uploadsDir, fbFeedFilename);
+    await sharp(buffer)
+      .resize(CROP_FORMATS.facebookFeed.width, CROP_FORMATS.facebookFeed.height, {
+        fit: "cover",
+        position: "center",
+      })
+      .toFile(fbFeedPath);
+    processedImages.facebookFeed = `/uploads/${fbFeedFilename}`;
+
+    // Process Instagram Feed (1080x1080)
+    const igFeedFilename = `${baseId}-ig-feed${fileExt}`;
+    const igFeedPath = path.join(this.uploadsDir, igFeedFilename);
+    await sharp(buffer)
+      .resize(CROP_FORMATS.instagramFeed.width, CROP_FORMATS.instagramFeed.height, {
+        fit: "cover",
+        position: "center",
+      })
+      .toFile(igFeedPath);
+    processedImages.instagramFeed = `/uploads/${igFeedFilename}`;
+
+    // Process Instagram Story (1080x1920)
+    const igStoryFilename = `${baseId}-ig-story${fileExt}`;
+    const igStoryPath = path.join(this.uploadsDir, igStoryFilename);
+    await sharp(buffer)
+      .resize(CROP_FORMATS.instagramStory.width, CROP_FORMATS.instagramStory.height, {
+        fit: "cover",
+        position: "center",
+      })
+      .toFile(igStoryPath);
+    processedImages.instagramStory = `/uploads/${igStoryFilename}`;
+
+    return processedImages;
+  }
+
+  async saveOriginalFile(buffer: Buffer, filename: string): Promise<string> {
+    const uniqueFilename = `${randomUUID()}-${filename}`;
+    const filePath = path.join(this.uploadsDir, uniqueFilename);
+    await fs.writeFile(filePath, buffer);
+    return `/uploads/${uniqueFilename}`;
+  }
+
+  async deleteFile(filePath: string): Promise<void> {
+    try {
+      const fullPath = path.join(process.cwd(), filePath);
+      await fs.unlink(fullPath);
+    } catch (error) {
+      console.error("Error deleting file:", error);
+    }
+  }
+}
+
+export const imageProcessor = new ImageProcessor();

server/services/openrouter.ts

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+interface ProductInfo {
+  name: string;
+  description?: string;
+  price?: string;
+  features?: string[];
+  [key: string]: any;
+}
+
+interface GeneratedText {
+  variant: string;
+  text: string;
+  characterCount: number;
+}
+
+export class OpenRouterService {
+  private apiKey: string;
+  private baseUrl = "https://openrouter.ai/api/v1/chat/completions";
+
+  constructor() {
+    this.apiKey = process.env.OPENROUTER_API_KEY || "";
+    if (!this.apiKey) {
+      console.warn("OPENROUTER_API_KEY not set. AI text generation will not work.");
+    }
+  }
+
+  async generatePostText(productInfo: ProductInfo): Promise<GeneratedText[]> {
+    if (!this.apiKey) {
+      throw new Error("OpenRouter API key not configured");
+    }
+
+    const prompt = this.buildPrompt(productInfo);
+
+    try {
+      const response = await fetch(this.baseUrl, {
+        method: "POST",
+        headers: {
+          "Authorization": `Bearer ${this.apiKey}`,
+          "Content-Type": "application/json",
+          "HTTP-Referer": process.env.APP_URL || "http://localhost:5000",
+          "X-Title": "Social Flow"
+        },
+        body: JSON.stringify({
+          model: "anthropic/claude-3.5-sonnet",
+          messages: [
+            {
+              role: "user",
+              content: prompt
+            }
+          ],
+          temperature: 0.8,
+          max_tokens: 1000
+        })
+      });
+
+      if (!response.ok) {
+        throw new Error(`OpenRouter API error: ${response.status} ${response.statusText}`);
+      }
+
+      const data = await response.json();
+      const content = data.choices[0]?.message?.content || "";
+
+      return this.parseGeneratedText(content);
+    } catch (error) {
+      console.error("Error generating text with OpenRouter:", error);
+      throw error;
+    }
+  }
+
+  private buildPrompt(productInfo: ProductInfo): string {
+    const features = productInfo.features?.join(", ") || "";
+    
+    return `Tu es un expert en marketing sur les réseaux sociaux. Génère 3 variantes de texte pour une publication Facebook/Instagram pour ce produit:
+
+Nom: ${productInfo.name}
+${productInfo.description ? `Description: ${productInfo.description}` : ''}
+${productInfo.price ? `Prix: ${productInfo.price}` : ''}
+${features ? `Caractéristiques: ${features}` : ''}
+
+Crée 3 versions différentes:
+1. Version Dynamique - Énergique et engageante avec des emojis
+2. Version Informative - Factuelle et professionnelle
+3. Version Émotionnelle - Axée sur les bénéfices émotionnels
+
+Chaque version doit:
+- Être en français
+- Faire entre 150-250 caractères
+- Être optimisée pour les réseaux sociaux
+- Inclure des emojis pertinents (sauf la version informative)
+
+Format de réponse:
+VERSION 1 - DYNAMIQUE:
+[texte]
+
+VERSION 2 - INFORMATIVE:
+[texte]
+
+VERSION 3 - ÉMOTIONNELLE:
+[texte]`;
+  }
+
+  private parseGeneratedText(content: string): GeneratedText[] {
+    const variants: GeneratedText[] = [];
+    
+    const version1Match = content.match(/VERSION 1 - DYNAMIQUE:\s*\n([\s\S]*?)(?=VERSION 2|$)/i);
+    const version2Match = content.match(/VERSION 2 - INFORMATIVE:\s*\n([\s\S]*?)(?=VERSION 3|$)/i);
+    const version3Match = content.match(/VERSION 3 - ÉMOTIONNELLE:\s*\n([\s\S]*?)$/i);
+
+    if (version1Match) {
+      const text = version1Match[1].trim();
+      variants.push({
+        variant: "Version 1 - Dynamique",
+        text,
+        characterCount: text.length
+      });
+    }
+
+    if (version2Match) {
+      const text = version2Match[1].trim();
+      variants.push({
+        variant: "Version 2 - Informative",
+        text,
+        characterCount: text.length
+      });
+    }
+
+    if (version3Match) {
+      const text = version3Match[1].trim();
+      variants.push({
+        variant: "Version 3 - Émotionnelle",
+        text,
+        characterCount: text.length
+      });
+    }
+
+    // Fallback if parsing fails
+    if (variants.length === 0) {
+      variants.push({
+        variant: "Généré par IA",
+        text: content.trim(),
+        characterCount: content.trim().length
+      });
+    }
+
+    return variants;
+  }
+}
+
+export const openRouterService = new OpenRouterService();

server/services/scheduler.ts

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+import cron, { ScheduledTask } from "node-cron";
+import { storage } from "../storage";
+
+export class SchedulerService {
+  private task: ScheduledTask | null = null;
+
+  start() {
+    // Run every minute to check for pending posts
+    this.task = cron.schedule("* * * * *", async () => {
+      await this.processPendingPosts();
+    });
+
+    console.log("Scheduler service started");
+  }
+
+  stop() {
+    if (this.task) {
+      this.task.stop();
+      console.log("Scheduler service stopped");
+    }
+  }
+
+  private async processPendingPosts() {
+    try {
+      const pendingPosts = await storage.getPendingScheduledPosts();
+
+      for (const scheduledPost of pendingPosts) {
+        try {
+          await this.publishPost(scheduledPost);
+        } catch (error) {
+          console.error(`Error publishing post ${scheduledPost.id}:`, error);
+          await storage.updateScheduledPost(scheduledPost.id, {
+            error: error instanceof Error ? error.message : "Unknown error",
+          });
+        }
+      }
+    } catch (error) {
+      console.error("Error processing pending posts:", error);
+    }
+  }
+
+  private async publishPost(scheduledPost: any) {
+    const post = await storage.getPost(scheduledPost.postId);
+    const page = await storage.getSocialPage(scheduledPost.pageId);
+
+    if (!post || !page) {
+      throw new Error("Post or page not found");
+    }
+
+    // In a real implementation, this would call Facebook/Instagram Graph API
+    // For now, we'll simulate the publishing
+    console.log(`Publishing post ${post.id} to ${page.platform} page ${page.pageName}`);
+
+    // Update the scheduled post as published
+    await storage.updateScheduledPost(scheduledPost.id, {
+      publishedAt: new Date(),
+      externalPostId: `simulated-${Date.now()}`, // In real app, this would be the ID from FB/IG
+    });
+
+    // Update post status
+    await storage.updatePost(post.id, {
+      status: "published",
+    });
+
+    console.log(`Successfully published post ${post.id}`);
+  }
+}
+
+export const schedulerService = new SchedulerService();