122 lines
2.9 KiB
Go
122 lines
2.9 KiB
Go
package controllers
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import (
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"bufio"
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"bytes"
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"encoding/json"
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"fmt"
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"io"
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"log"
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"net/http"
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"strings"
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"time"
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"github.com/gofiber/fiber/v2"
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"github.com/sujit-baniya/fiber-boilerplate/pkg/models"
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)
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type DataIa struct {
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Prompt string `json:"prompt"`
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Model string `json:"model"`
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Stream bool `json:"stream"`
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}
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type respuestaOllama struct {
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Response string `json:"response"`
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Done bool `json:"done"`
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Error string `json:"error"`
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}
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func GeneraTextoStream(c *fiber.Ctx) error {
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var data DataIa
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if err := c.BodyParser(&data); err != nil {
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return c.Status(fiber.StatusBadRequest).JSON(fiber.Map{"error": "Datos inválidos"})
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}
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data.Stream = true
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hasDBConfig := true
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config, err := models.GetAiConfigForService("ia")
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if err != nil {
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hasDBConfig = false
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config = &models.AiConfig{
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BaseURL: "http://72.60.24.97:8080/ollama",
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ApiKey: "",
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ModelName: "gemma3:1b",
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}
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}
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if data.Model == "" {
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data.Model = config.ModelName
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}
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if data.Model == "" {
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data.Model = "gemma3:1b"
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}
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baseURL := strings.TrimSuffix(strings.TrimRight(config.BaseURL, "/"), "/v1")
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endpoint := baseURL + "/api/generate"
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if !hasDBConfig {
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log.Printf("[IA] Usando config default: endpoint=%s model=%s", endpoint, data.Model)
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} else {
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log.Printf("[IA] Usando config BD: endpoint=%s model=%s", endpoint, data.Model)
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}
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jsonData, _ := json.Marshal(data)
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req, err := http.NewRequest("POST", endpoint, bytes.NewBuffer(jsonData))
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if err != nil {
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return err
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}
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req.Header.Set("Content-Type", "application/json")
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if config.ApiKey != "" && config.ApiKey != "ollama" {
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req.SetBasicAuth("ollama", config.ApiKey)
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}
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client := &http.Client{Timeout: 120 * time.Second}
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resp, err := client.Do(req)
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if err != nil {
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log.Printf("[IA] Error conectando a Ollama: %v", err)
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return c.Status(fiber.StatusBadGateway).JSON(fiber.Map{"error": err.Error()})
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}
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if resp.StatusCode != http.StatusOK {
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bodyBytes, _ := io.ReadAll(resp.Body)
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resp.Body.Close()
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log.Printf("[IA] Ollama status %d: %s", resp.StatusCode, string(bodyBytes))
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return c.Status(fiber.StatusBadGateway).JSON(fiber.Map{
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"error": fmt.Sprintf("Ollama respondió con status %d", resp.StatusCode),
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"details": string(bodyBytes),
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})
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}
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c.Set("Content-Type", "text/plain; charset=utf-8")
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c.Set("Cache-Control", "no-cache")
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c.Set("X-Accel-Buffering", "no")
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c.Context().SetBodyStreamWriter(func(w *bufio.Writer) {
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defer resp.Body.Close()
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dec := json.NewDecoder(resp.Body)
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for {
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var msg respuestaOllama
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if err := dec.Decode(&msg); err != nil {
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if err != io.EOF {
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log.Printf("[IA] Error decodificando: %v", err)
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}
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break
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}
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if msg.Error != "" {
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log.Printf("[IA] Ollama error: %s", msg.Error)
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fmt.Fprintf(w, "[Error: %s]", msg.Error)
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w.Flush()
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break
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}
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if msg.Response != "" {
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fmt.Fprint(w, msg.Response)
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w.Flush()
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}
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if msg.Done {
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break
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}
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}
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})
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return nil
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}
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