catbase/plugins/talklikeapirate/pirate.go

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2024-09-28 14:28:58 +00:00
package talklikeapirate
import (
"context"
"errors"
"fmt"
"github.com/google/generative-ai-go/genai"
"github.com/rs/zerolog/log"
"github.com/velour/catbase/bot"
"github.com/velour/catbase/config"
"google.golang.org/api/option"
)
// TalkLikeAPiratePlugin reimplements the send function
// with an AI intermediate.
type TalkLikeAPiratePlugin struct {
client *genai.Client
prompt string
b bot.Bot
c *config.Config
}
func New(c *config.Config) *TalkLikeAPiratePlugin {
p := &TalkLikeAPiratePlugin{
c: c,
}
return p
}
func (p *TalkLikeAPiratePlugin) Filter(input string) (string, error) {
if !p.c.GetBool("talklikeapirate.enabled", false) {
return input, nil
}
if p.client == nil {
var err error
p.client, err = p.getClient()
if err != nil {
return input, err
}
}
model, err := p.GetModel()
if err != nil {
log.Error().Err(err).Send()
return input, err
}
res, err := model.GenerateContent(context.Background(), genai.Text(input))
if err != nil {
log.Error().Err(err).Send()
return input, err
}
if len(res.Candidates) == 0 {
err := errors.New("no candidates found")
log.Error().Err(err).Send()
return input, err
}
// Need to check here that we got an actual completion, not a
// warning about bad content. FinishReason exists on Completion.
completion := ""
for _, p := range res.Candidates[0].Content.Parts {
completion += fmt.Sprintf("%s", p)
}
return completion, nil
}
func (p *TalkLikeAPiratePlugin) GetModel() (*genai.GenerativeModel, error) {
model := p.client.GenerativeModel(p.c.Get("gemini.model", "gemini-1.5-flash"))
model.SetMaxOutputTokens(int32(p.c.GetInt("gemini.maxtokens", 100)))
model.SetTopP(float32(p.c.GetFloat64("gemini.topp", 0.95)))
model.SetTopK(int32(p.c.GetInt("gemini.topk", 20)))
model.SetTemperature(float32(p.c.GetFloat64("gemini.temp", 0.9)))
model.SafetySettings = []*genai.SafetySetting{
{genai.HarmCategoryHarassment, genai.HarmBlockNone},
{genai.HarmCategoryHateSpeech, genai.HarmBlockNone},
{genai.HarmCategorySexuallyExplicit, genai.HarmBlockNone},
{genai.HarmCategoryDangerousContent, genai.HarmBlockNone},
}
if prompt := p.c.Get("talklikeapirate.systemprompt", ""); prompt != "" {
model.SystemInstruction = &genai.Content{
Parts: []genai.Part{genai.Text(prompt)},
}
} else {
return nil, errors.New("no system prompt selected")
}
return model, nil
}
func (p *TalkLikeAPiratePlugin) getClient() (*genai.Client, error) {
ctx := context.Background()
key := p.c.Get("GEMINI_API_KEY", "")
if key == "" {
return nil, errors.New("missing GEMINI_API_KEY")
}
client, err := genai.NewClient(ctx, option.WithAPIKey(key))
if err != nil {
return nil, err
}
return client, nil
}