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message.go
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message.go
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package agent
import (
"context"
"encoding/base64"
"fmt"
"gopkg.in/yaml.v2"
)
type ContentFn func(context.Context) (string, error)
type Image struct {
Name string
Data []byte
}
type Message struct {
Role Role
content string
imageData []Image
// TODO: add name concept which is part of openai api anyway. Might be useful, but also better to not
// overuse FunctionCallName for functions.
Name string
FunctionCallName string
FunctionCallArgs string
contentFn ContentFn
attrs map[string]string
}
func (m *Message) Content(ctx context.Context) (string, error) {
if m.contentFn != nil {
return m.contentFn(ctx)
}
return m.content, nil
}
func (m *Message) Images() []Image {
i := make([]Image, len(m.imageData))
copy(i, m.imageData)
return i
}
func (m *Message) AddImage(name string, data []byte) {
m.imageData = append(m.imageData, Image{Name: name, Data: data})
}
func (m *Message) SetAttr(key, value string) {
m.attrs[key] = value
}
func (m *Message) GetAttr(key string) string {
return m.attrs[key]
}
func (m *Message) Tag(key string) {
m.attrs[key] = ""
}
func (m *Message) ClearTag(key string) {
delete(m.attrs, key)
}
func (m *Message) HasTag(key string) bool {
_, ok := m.attrs[key]
return ok
}
func newMessage() *Message {
return &Message{attrs: make(map[string]string)}
}
func NewContentMessage(role Role, content string) *Message {
m := newMessage()
m.Role = role
m.content = content
return m
}
func NewImageMessage(role Role, content string, imageName string, imageData []byte) *Message {
m := newMessage()
m.Role = role
m.content = content
m.AddImage(imageName, imageData)
return m
}
func NewDynamicMessage(role Role, contentFn ContentFn) *Message {
m := newMessage()
m.Role = role
m.contentFn = contentFn
return m
}
func NewMessageFromMessage(m *Message) *Message {
nm := newMessage()
nm.Role = m.Role
nm.content = m.content
nm.Name = m.Name
nm.FunctionCallName = m.FunctionCallName
nm.FunctionCallArgs = m.FunctionCallArgs
nm.contentFn = m.contentFn
nm.imageData = make([]Image, len(m.imageData))
copy(nm.imageData, m.imageData)
for k, v := range m.attrs {
nm.attrs[k] = v
}
return nm
}
func ExportMessagesToYAML(ctx context.Context, messages []*Message) (string, error) {
yamlMessages := make([]map[string]interface{}, len(messages))
for i, m := range messages {
content, err := m.Content(ctx)
if err != nil {
return "", fmt.Errorf("error getting message content: %w", err)
}
yamlMessage := make(map[string]interface{})
yamlMessage["Role"] = m.Role
yamlMessage["Content"] = content
if len(m.imageData) > 0 {
yamlMessage["Images"] = make([]map[string]string, 0, len(m.imageData))
images := make([]interface{}, 0, len(m.imageData))
for _, img := range m.imageData {
dst := make([]byte, base64.StdEncoding.EncodedLen(len(img.Data)))
base64.StdEncoding.Encode(dst, img.Data)
img := map[string]string{
"name": img.Name,
"data": string(dst),
}
images = append(images, img)
}
yamlMessage["Images"] = images
}
// TODO: Functions
// TODO: attrs
yamlMessages[i] = yamlMessage
}
bytes, err := yaml.Marshal(yamlMessages)
if err != nil {
return "", fmt.Errorf("error marshaling messages to YAML: %w", err)
}
return string(bytes), nil
}
func ImportMessagesFromYAML(yamlString string) ([]*Message, error) {
var yamlMessages []map[string]interface{}
if err := yaml.Unmarshal([]byte(yamlString), &yamlMessages); err != nil {
return nil, fmt.Errorf("error unmarshaling YAML: %w", err)
}
var messages []*Message
for _, ym := range yamlMessages {
messages = append(messages, &Message{
Role: Role(ym["Role"].(string)),
content: ym["Content"].(string),
})
}
return messages, nil
}