mirror of
https://github.com/Dvorinka/MyClubServer.git
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dev day #79
This commit is contained in:
Tomas Dvorak
@@ -298,6 +298,154 @@ type aiCSSResponse struct {
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CSS string `json:"css"`
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}
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// Instagram caption generation
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type aiInstaMatch struct {
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Home string `json:"home"`
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Away string `json:"away"`
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Competition string `json:"competition"`
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DateTime string `json:"date_time"`
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Venue string `json:"venue"`
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Score string `json:"score"`
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}
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type aiInstagramRequest struct {
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Type string `json:"type"` // "article" | "event" | "generic"
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Title string `json:"title"`
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Content string `json:"content"` // plain text, HTML will be ignored
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ClubName string `json:"club_name"`
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Link string `json:"link"`
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Hashtags []string `json:"hashtags"`
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Audience string `json:"audience"`
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Tone string `json:"tone"`
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Match *aiInstaMatch `json:"match"`
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}
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type aiInstagramResponse struct {
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Text string `json:"text"`
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}
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// GenerateInstagram creates an Instagram caption in Czech using OpenRouter
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func (ac *AIController) GenerateInstagram(c *gin.Context) {
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var req aiInstagramRequest
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if err := c.ShouldBindJSON(&req); err != nil {
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c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
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return
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}
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// Normalize
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t := strings.ToLower(strings.TrimSpace(req.Type))
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if t == "" { t = "article" }
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club := strings.TrimSpace(req.ClubName)
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if club == "" { club = "Náš klub" }
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audience := strings.TrimSpace(req.Audience)
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if audience == "" { audience = "fanoušci klubu" }
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tone := strings.TrimSpace(req.Tone)
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if tone == "" { tone = "informativní, přátelský" }
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// Build system and user messages
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system := "Jsi zkušený český social media copywriter pro fotbalový klub. Píšeš poutavé, ale profesionální popisky na Instagram v gramaticky správné češtině (bez neologismů). Buď konkrétní, z textu vyber to nejdůležitější, vyhni se klišé. Výsledek vrať POUZE JSON: {\"text\": \"...\"}."
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// Compose contextual notes
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var notes []string
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if req.Title != "" { notes = append(notes, "Titulek: "+req.Title) }
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if strings.TrimSpace(req.Content) != "" { notes = append(notes, "Obsah (zkrácený): "+strings.TrimSpace(req.Content)) }
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if req.Match != nil {
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m := req.Match
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line := []string{}
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if m.Home != "" || m.Away != "" { line = append(line, fmt.Sprintf("%s vs %s", strings.TrimSpace(m.Home), strings.TrimSpace(m.Away))) }
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if strings.TrimSpace(m.Score) != "" { line = append(line, "Výsledek: "+strings.TrimSpace(m.Score)) }
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if strings.TrimSpace(m.Competition) != "" { line = append(line, strings.TrimSpace(m.Competition)) }
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if strings.TrimSpace(m.DateTime) != "" { line = append(line, strings.TrimSpace(m.DateTime)) }
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if strings.TrimSpace(m.Venue) != "" { line = append(line, "Místo: "+strings.TrimSpace(m.Venue)) }
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if len(line) > 0 { notes = append(notes, "Zápas: "+strings.Join(line, " • ")) }
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}
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if strings.TrimSpace(req.Link) != "" { notes = append(notes, "Krátký odkaz: "+strings.TrimSpace(req.Link)) }
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if len(req.Hashtags) > 0 { notes = append(notes, "Preferované hashtagy: "+strings.Join(req.Hashtags, ", ")) }
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// Hard requirements
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requirements := []string{
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"Délka 80–140 slov, rozdělit do 2–3 krátkých odstavců.",
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"Použij maximálně 6 emotikonů (žádné dlouhé řetězy).",
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"Na konec vlož oddělovač a řádek '🔗 ' následovaný přesně poskytnutým krátkým odkazem.",
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"Přidej 4–6 relevantních českých hashtagů (včetně klubového), přirozeně na konci.",
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"Drž se zadaného obsahu. Bez vymýšlení neexistujících informací.",
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fmt.Sprintf("Tón: %s. Publikum: %s.", tone, audience),
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}
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// Build user prompt
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user := fmt.Sprintf("Typ: %s\nKlub: %s\n\nPoznámky:\n- %s\n\nPožadavky:\n- %s\n\nVrať POUZE JSON bez formátování.", t, club, strings.Join(notes, "\n- "), strings.Join(requirements, "\n- "))
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baseURL := getOpenRouterBaseURL()
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apiKey := getOpenRouterAPIKey()
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if strings.TrimSpace(apiKey) == "" {
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c.JSON(http.StatusBadRequest, gin.H{"error": "OPENROUTER_API_KEY není nastaven"})
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return
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}
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model := getOpenRouterModel()
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if model == "" { model = "mistralai/mistral-small-3.2-24b-instruct:free" }
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fallbackModel := getOpenRouterFallbackModel()
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if fallbackModel == "" { fallbackModel = "mistralai/mistral-nemo:free" }
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callModel := func(modelName string) (string, int, error) {
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payload := map[string]interface{}{
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"model": modelName,
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"messages": []map[string]string{
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{"role": "system", "content": system},
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{"role": "user", "content": user},
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},
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"temperature": 0.5,
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"max_tokens": 800,
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}
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body, _ := json.Marshal(payload)
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endpoint := strings.TrimRight(baseURL, "/") + "/chat/completions"
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reqHTTP, err := http.NewRequest("POST", endpoint, bytes.NewReader(body))
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if err != nil { return "", http.StatusInternalServerError, err }
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reqHTTP.Header.Set("Authorization", "Bearer "+apiKey)
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reqHTTP.Header.Set("Content-Type", "application/json")
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if ref := strings.TrimSpace(getenv("OPENROUTER_SITE_URL")); ref != "" { reqHTTP.Header.Set("HTTP-Referer", ref) }
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if ttl := strings.TrimSpace(getenv("OPENROUTER_APP_NAME")); ttl != "" { reqHTTP.Header.Set("X-Title", ttl) }
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client := &http.Client{Timeout: 45 * time.Second}
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resp, err := client.Do(reqHTTP)
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if err != nil { return "", http.StatusBadGateway, err }
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defer resp.Body.Close()
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if resp.StatusCode < 200 || resp.StatusCode >= 300 {
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var e map[string]interface{}
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_ = json.NewDecoder(resp.Body).Decode(&e)
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return "", resp.StatusCode, fmt.Errorf("OpenRouter API error: %v", e)
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}
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var or struct { Choices []struct { Message struct{ Content string `json:"content"` } `json:"message"` } `json:"choices"` }
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if err := json.NewDecoder(resp.Body).Decode(&or); err != nil { return "", http.StatusBadGateway, err }
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if len(or.Choices) == 0 { return "", http.StatusBadGateway, fmt.Errorf("empty choices") }
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return strings.TrimSpace(or.Choices[0].Message.Content), http.StatusOK, nil
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}
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content, _, err := callModel(model)
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if err != nil || strings.TrimSpace(content) == "" {
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if fbContent, _, fbErr := callModel(fallbackModel); fbErr == nil && strings.TrimSpace(fbContent) != "" {
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content = fbContent
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} else {
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if err != nil { c.JSON(http.StatusBadGateway, gin.H{"error": "OpenRouter selhal (včetně fallbacku)", "details": err.Error()}); return }
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if fbErr != nil { c.JSON(http.StatusBadGateway, gin.H{"error": "OpenRouter fallback selhal", "details": fbErr.Error()}); return }
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c.JSON(http.StatusBadGateway, gin.H{"error": "OpenRouter vrátil prázdnou odpověď"}); return
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}
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}
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sanitized := sanitizeAIResponse(content)
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var out aiInstagramResponse
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if err := json.Unmarshal([]byte(sanitized), &out); err != nil {
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re := regexp.MustCompile(`(?s)\{[^{}]*(?:\{[^{}]*\}[^{}]*)*\}`)
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if m := re.FindString(sanitized); m != "" {
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_ = json.Unmarshal([]byte(m), &out)
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}
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}
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if strings.TrimSpace(out.Text) == "" {
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// minimal fallback
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txt := req.Title
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if txt == "" { txt = "Novinky z klubu" }
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out.Text = fmt.Sprintf("%s\n\n🔗 %s", txt, strings.TrimSpace(req.Link))
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}
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c.JSON(http.StatusOK, out)
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}
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// GenerateBlog creates a blog article using the OpenRouter API (with Mistral models)
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func (ac *AIController) GenerateBlog(c *gin.Context) {
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var req aiBlogRequest
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