package main
import (
  "context"
  "encoding/json"
  "fmt"
  "log"
  "os"
  "github.com/google/generative-ai-go/genai"
  "google.golang.org/api/option"
)
func main() {
  ctx := context.Background()
  client, err := genai.NewClient(ctx, option.WithAPIKey(os.Getenv("API_KEY")))
  if err != nil {
    log.Fatal(err)
  }
  defer client.Close()
  model := client.GenerativeModel("gemini-pro-vision")
  imgData1, err := os.ReadFile("../images/turtle1.png")
  if err != nil {
    log.Fatal(err)
  }
  imgData2, err := os.ReadFile("../images/turtle2.png")
  if err != nil {
    log.Fatal(err)
  }
  prompt := []genai.Part{
    genai.ImageData("png", imgData1),
    genai.ImageData("png", imgData2),
    genai.Text("Describe the difference between these two pictures, with scientific detail"),
  }
  resp, err := model.GenerateContent(ctx, prompt...)
  if err != nil {
    log.Fatal(err)
  }
  bs, _ := json.MarshalIndent(resp, "", "    ")
  fmt.Println(string(bs))
}

"Content": {
  "Parts": [
    "The first picture is of a tortoise, which is a reptile characterized by
    its hard shell. The second picture is of a sea turtle, which is a reptile
    characterized by its flippers and streamlined shell. Tortoises are
    terrestrial animals, while sea turtles are marine animals. Tortoises have
    a domed shell, while sea turtles have a flattened shell. Tortoises have
    thick, scaly skin, while sea turtles have smooth, leathery skin. Tortoises
    have short legs with claws, while sea turtles have long flippers.
    Tortoises have a slow metabolism and can live for over 100 years, while
    sea turtles have a faster metabolism and typically live for around 50
    years."
  ],
  "Role": "model"
},

client, err := genai.NewClient(ctx, os.Getenv("GCP_PROJECT_ID"), "us-central1")