prise en charge des outils + weather

backend/cmd/dip.go

@@ -0,0 +1,105 @@
+package cmd
+
+import (
+	"time"
+
+	"trankilou.fr/lassistanoque/backend/internal/adapter/auth/password"
+	"trankilou.fr/lassistanoque/backend/internal/adapter/database"
+	"trankilou.fr/lassistanoque/backend/internal/adapter/file"
+	"trankilou.fr/lassistanoque/backend/internal/adapter/llm"
+	"trankilou.fr/lassistanoque/backend/internal/adapter/security"
+	"trankilou.fr/lassistanoque/backend/internal/adapter/tools/weather"
+	"trankilou.fr/lassistanoque/backend/internal/domain"
+	"trankilou.fr/lassistanoque/backend/internal/service/auth"
+	"trankilou.fr/lassistanoque/backend/internal/service/chat"
+	"trankilou.fr/lassistanoque/backend/internal/service/storage"
+)
+
+var db database.Database
+var store storage.StorageProvider
+var userRepository domain.UserRepository
+var providerRepository domain.ProviderRepository
+var agentRepository domain.AgentRepository
+var chatRepository domain.ChatRepository
+var settingsRepository domain.SettingsRepository
+var authenticators = make(map[string]auth.Authenticator)
+var tokenManager auth.TokenManager
+var llmengine domain.LLMEngine
+
+func init() {
+	var err error
+
+	db, err := database.GetDatabase()
+	if err != nil {
+		panic(err)
+	}
+
+	err = db.Migrate()
+	if err != nil {
+		panic(err)
+	}
+
+	// repositories
+	userRepository = db.UserRepository()
+	providerRepository = db.ProviderRepository()
+	agentRepository = db.AgentRepository()
+	chatRepository = db.ChatRepository()
+	settingsRepository = db.SettingsRepository()
+
+	// storage
+	store, err = file.GetStorageProvider(db.FileRepository())
+	if err != nil {
+		panic(err)
+	}
+
+	// authentication
+	tokenManager = security.NewJwtTokenManager(12*time.Hour, 7*24*time.Hour, "lassistanoque")
+	pwdAuth := password.NewPasswordAuthenticator(tokenManager, GetUserRepository())
+	authenticators["password"] = pwdAuth
+
+	// llm
+	llmengine = llm.NewAnyLLMEngine()
+
+	// llm tools
+	chat.RegisterTool(&weather.WeatherTool{})
+}
+
+func GetStorageProvider() storage.StorageProvider {
+	return store
+}
+
+func GetUserRepository() domain.UserRepository {
+	return userRepository
+}
+
+func GetProviderRepository() domain.ProviderRepository {
+	return providerRepository
+}
+
+func GetAgentRepository() domain.AgentRepository {
+	return agentRepository
+}
+
+func GetChatRepository() domain.ChatRepository {
+	return chatRepository
+}
+
+func GetSettingsRepository() domain.SettingsRepository {
+	return settingsRepository
+}
+
+func GetAuthenticators() map[string]auth.Authenticator {
+	return authenticators
+}
+
+func GetTokenManager() auth.TokenManager {
+	return tokenManager
+}
+
+func GetLLMEngine() domain.LLMEngine {
+	return llmengine
+}
+
+func Close() {
+	db.Close()
+}

backend/cmd/serve.go

@@ -11,11 +11,6 @@ import (
 	"time"
 
 	"github.com/spf13/cobra"
-	"trankilou.fr/lassistanoque/backend/internal/adapter/auth/password"
-	"trankilou.fr/lassistanoque/backend/internal/adapter/database"
-	"trankilou.fr/lassistanoque/backend/internal/adapter/file"
-	"trankilou.fr/lassistanoque/backend/internal/adapter/llm"
-	"trankilou.fr/lassistanoque/backend/internal/adapter/security"
 	"trankilou.fr/lassistanoque/backend/internal/brain"
 	"trankilou.fr/lassistanoque/backend/internal/http"
 	"trankilou.fr/lassistanoque/backend/internal/service/agent"
@@ -46,60 +41,30 @@ func newServeCmd() *cobra.Command {
 }
 
 func runServe() {
-	// database
-	db, err := database.GetDatabase()
-	if err != nil {
-		panic(err)
-	}
-	defer db.Close()
 
-	err = db.Migrate()
-	if err != nil {
-		panic(err)
-	}
-
-	// storage
-	store, err := file.GetStorageProvider(db.FileRepository())
-	if err != nil {
-		panic(err)
-	}
-
-	// Adapters
-	tokenManager := security.NewJwtTokenManager(12*time.Hour, 7*24*time.Hour, "lassistanoque")
-	pwdAuth := password.NewPasswordAuthenticator(tokenManager, db.UserRepository())
-	llmEngine := llm.NewAnyLLMEngine()
-	repoUser := db.UserRepository()
-	repoProvider := db.ProviderRepository()
-	repoAgent := db.AgentRepository()
-	repoChat := db.ChatRepository()
+	defer Close()
 
 	// services
-	authService := auth.NewService(
-		db.SettingsRepository(),
-		db.UserRepository(),
-		map[string]auth.Authenticator{
-			"password": pwdAuth,
-		},
-	)
-	userService := user.NewService(repoUser)
-	storageService := storage.NewService(store)
-	providerService := provider.NewService(repoProvider, repoUser, llmEngine)
-	agentService := agent.NewService(repoAgent, repoUser)
-	chatService := chat.NewService(repoUser, repoAgent, repoProvider, repoChat, llmEngine)
+	authService := auth.NewService(GetSettingsRepository(), GetUserRepository(), GetAuthenticators())
+	userService := user.NewService(GetUserRepository())
+	storageService := storage.NewService(GetStorageProvider())
+	providerService := provider.NewService(GetProviderRepository(), GetUserRepository(), GetLLMEngine())
+	agentService := agent.NewService(GetAgentRepository(), GetUserRepository())
+	chatService := chat.NewService(GetUserRepository(), GetAgentRepository(), GetProviderRepository(), GetChatRepository(), GetLLMEngine())
 
 	// http server
 	httpRouter := http.NewRouter(http.Dependencies{
 		StorageService:  storageService,
 		AuthService:     authService,
 		UserService:     userService,
-		TokenManager:    tokenManager,
 		ProviderService: providerService,
 		AgentService:    agentService,
 		ChatService:     chatService,
+		TokenManager:    GetTokenManager(),
 	})
 
 	brainRouter := brain.NewRouter(brain.Dependencies{
-		ChatRepository: db.ChatRepository(),
+		ChatRepository: GetChatRepository(),
 	})
 
 	ctx, stop := signal.NotifyContext(context.Background(), os.Interrupt, syscall.SIGTERM)

backend/internal/adapter/database/turso/chat_repository.go

@@ -67,8 +67,24 @@ func (r *TursoChatRepository) DeleteChat(userID string, teamID string, id string
 	)
 }
 
-func (r *TursoChatRepository) GetChatMessages(userID string, teamID string, chatID string) ([]*domain.Message, error) {
-	return r.messageTable.Select(
+func (r *TursoChatRepository) GetChatMessages(userID string, teamID string, chatID string, withToolCallResponses bool) ([]*domain.Message, error) {
+	var messages []*domain.Message
+	var err error
+	if !withToolCallResponses {
+		messages, err = r.messageTable.Select(
+			orm.WithWhere(
+				`chat_id=$1
+				and team_id=$2
+				and team_id in (select team_id from user_teams where user_id=$3)
+				and (tool_call_id='' or tool_call_id is null)`,
+				chatID,
+				teamID,
+				userID,
+			),
+			orm.WithOrder("_date_created asc"),
+		)
+	} else {
+		messages, err = r.messageTable.Select(
 			orm.WithWhere(
 				"chat_id=$1 and team_id=$2 and team_id in (select team_id from user_teams where user_id=$3)",
 				chatID,
@@ -77,8 +93,17 @@ func (r *TursoChatRepository) GetChatMessages(userID string, teamID string, chat
 			),
 			orm.WithOrder("_date_created asc"),
 		)
+	}
+	if err != nil {
+		return nil, err
+	}
+	for _, m := range messages {
+		m.Json2toolCall()
+	}
+	return messages, nil
 }
 
 func (r *TursoChatRepository) CreateChatMessage(userID string, message *domain.Message) (*domain.Message, error) {
+	message.ToolCall2Json()
 	return r.messageTable.Insert(message)
 }

backend/internal/adapter/llm/anyllm.go

@@ -3,6 +3,7 @@ package llm
 import (
 	"context"
 	"fmt"
+	"log/slog"
 
 	anyllm "github.com/mozilla-ai/any-llm-go"
 	"github.com/mozilla-ai/any-llm-go/providers"
@@ -82,11 +83,14 @@ func (e *AnyLLMEngine) Stream(
 	modelID string,
 	params *domain.LLMParams,
 	messages []*domain.Message,
-) (*domain.Message, error) {
+) *domain.Message {
 
 	p, err := providerFactory(provider)
 	if err != nil {
-		return nil, err
+		return &domain.Message{
+			Role:    string(domain.RoleAssistant),
+			Content: err.Error(),
+		}
 	}
 
 	anyllmMessages := make([]anyllm.Message, 0)
@@ -101,18 +105,27 @@ func (e *AnyLLMEngine) Stream(
 		params.ReasoningEffort = "none"
 	}
 
+	tools := make([]providers.Tool, len(params.Tools))
+	for i, t := range params.Tools {
+		tools[i] = toolConvert(t)
+	}
+
+	toolCalling := false
+	toolCalls := make([]domain.ToolCall, 0)
+
 	chunkChan, errChan := p.CompletionStream(ctx, anyllm.CompletionParams{
 		Model:           modelID,
 		Messages:        anyllmMessages,
 		Stream:          true,
 		ReasoningEffort: providers.ReasoningEffort(params.ReasoningEffort),
+		Tools:           tools,
 	})
 
 	fullContent := ""
-	role := anyllm.RoleAssistant
 
 	for chunk := range chunkChan {
 		if len(chunk.Choices) > 0 {
+
 			content := chunk.Choices[0].Delta.Content
 			reasoning := chunk.Choices[0].Delta.Reasoning
 			if params.OnChunk != nil {
@@ -120,34 +133,82 @@ func (e *AnyLLMEngine) Stream(
 					fullContent += content
 					params.OnChunk(&domain.Chunk{
 						Done:      false,
-						Role:      role,
+						Role:      anyllm.RoleAssistant,
 						Content:   content,
 						Reasoning: false,
 					})
 				} else if reasoning != nil {
 					params.OnChunk(&domain.Chunk{
 						Done:      false,
-						Role:      role,
+						Role:      anyllm.RoleAssistant,
 						Content:   reasoning.Content,
 						Reasoning: true,
 					})
 				}
 			}
-		}
+
+			for _, tc := range chunk.Choices[0].Delta.ToolCalls {
+				toolCalling = true
+				slog.Info("Model is calling tool", "tool", tc.Function.Name, "arguments", tc.Function.Arguments)
+
+				extra := make(map[string]map[string]any)
+				for k, v := range tc.Extra {
+					m := map[string]any(v)
+					extra[k] = m
 				}
 
-	params.OnChunk(&domain.Chunk{
-		Done:    true,
-		Role:    role,
-		Content: "",
+				toolCalls = append(toolCalls, domain.ToolCall{
+					ID:   tc.ID,
+					Type: tc.Type,
+					Function: domain.ToolCallFunction{
+						Name:      tc.Function.Name,
+						Arguments: tc.Function.Arguments,
+					},
+					Extra: extra,
 				})
 
+				params.OnChunk(&domain.Chunk{
+					Done:      false,
+					ToolName:  tc.Function.Name,
+					Role:      anyllm.RoleAssistant,
+					Content:   tc.Function.Arguments,
+					Reasoning: false,
+				})
+
+			}
+
+		}
+	}
+
+	if !toolCalling {
+		params.OnChunk(&domain.Chunk{
+			Done:    true,
+			Role:    anyllm.RoleAssistant,
+			Content: "",
+		})
+	}
+
 	if err := <-errChan; err != nil {
-		return nil, err
+		return &domain.Message{
+			Role:    string(domain.RoleAssistant),
+			Content: err.Error(),
+		}
 	}
 
 	return &domain.Message{
-		Role:    role,
+		Role:      string(domain.RoleAssistant),
 		Content:   fullContent,
-	}, nil
+		ToolCalls: toolCalls,
+	}
+}
+
+func toolConvert(domainTool *domain.ToolDefinition) providers.Tool {
+	return providers.Tool{
+		Type: domainTool.Type,
+		Function: providers.Function{
+			Name:        domainTool.Function.Name,
+			Description: domainTool.Function.Description,
+			Parameters:  domainTool.Function.Parameters,
+		},
+	}
 }

backend/internal/adapter/tools/weather/tool.go

@@ -0,0 +1,183 @@
+package weather
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"net/url"
+	"strings"
+
+	"trankilou.fr/lassistanoque/backend/internal/domain"
+)
+
+type WeatherTool struct {
+}
+
+type WeatherConfig struct {
+}
+
+func (t *WeatherTool) Name() string {
+	return "weather"
+}
+
+func (t *WeatherTool) Description() string {
+	return "Get the current weather for a given location"
+}
+
+func (t *WeatherTool) Definition(ctx context.Context) *domain.ToolDefinition {
+	return &domain.ToolDefinition{
+		Type: "function",
+		Function: &domain.ToolFunction{
+			Name:        t.Name(),
+			Description: t.Description(),
+			Parameters: map[string]any{
+				"type": "object",
+				"properties": map[string]any{
+					"location": map[string]any{
+						"type":        "string",
+						"description": "The city name, e.g., 'Paris' or 'New York'",
+					},
+				},
+				"required": []string{"location"},
+			},
+		},
+	}
+}
+
+func (t *WeatherTool) Execute(ctx context.Context, input []byte) ([]byte, error) {
+
+	var params struct {
+		Location string `json:"location"`
+	}
+	err := json.Unmarshal(input, &params)
+	if err != nil {
+		return nil, err
+	}
+
+	resp, err := http.Get("https://geocoding-api.open-meteo.com/v1/search?name=" + url.QueryEscape(params.Location))
+	if err != nil {
+		return nil, err
+	}
+	defer resp.Body.Close()
+
+	var location struct {
+		Results []struct {
+			Latitude  float64 `json:"latitude"`
+			Longitude float64 `json:"longitude"`
+		} `json:"results"`
+	}
+	err = json.NewDecoder(resp.Body).Decode(&location)
+	if err != nil {
+		return nil, err
+	}
+
+	if len(location.Results) == 0 {
+		return nil, fmt.Errorf("location not found : %s", input)
+	}
+
+	lon := location.Results[0].Longitude
+	lat := location.Results[0].Latitude
+
+	weatherResp, err := http.Get(fmt.Sprintf("https://api.open-meteo.com/v1/forecast?latitude=%f&longitude=%f&current_weather=true&daily=weather_code,temperature_2m_max,temperature_2m_min,rain_sum,wind_speed_10m_max&hourly=temperature_2m&forecast_days=15", lat, lon))
+	if err != nil {
+		return nil, err
+	}
+	defer weatherResp.Body.Close()
+
+	var weatherData struct {
+		CurrentWeatherUnits struct {
+			Temperature string `json:"temperature"`
+			WindSpeed   string `json:"windspeed"`
+		} `json:"current_weather_units"`
+		CurrentWeather struct {
+			Time        string  `json:"time"`
+			Temperature float64 `json:"temperature"`
+			WeatherCode int     `json:"weathercode"`
+		} `json:"current_weather"`
+		DailyUnits struct {
+			TemperatureMax string `json:"temperature_2m_max"`
+			TemperatureMin string `json:"temperature_2m_min"`
+			Rain           string `json:"rain_sum"`
+			WindSpeed      string `json:"wind_speed_10m_max"`
+		} `json:"daily_units"`
+		Daily struct {
+			Time           []string  `json:"time"`
+			TemperatureMax []float64 `json:"temperature_2m_max"`
+			TemperatureMin []float64 `json:"temperature_2m_min"`
+			Rain           []float64 `json:"rain_sum"`
+			WindSpeed      []float64 `json:"wind_speed_10m_max"`
+		} `json:"daily"`
+	}
+
+	err = json.NewDecoder(weatherResp.Body).Decode(&weatherData)
+	if err != nil {
+		return nil, err
+	}
+
+	var builder strings.Builder
+
+	fmt.Fprintf(&builder, "Current weather in %s\n", params.Location)
+	fmt.Fprintf(&builder, "- Time: %s\n", weatherData.CurrentWeather.Time)
+	fmt.Fprintf(&builder, "- Temperature:  %.2f %s\n", weatherData.CurrentWeather.Temperature, weatherData.CurrentWeatherUnits.Temperature)
+	fmt.Fprintf(&builder, "- Weather code: %d - %s\n", weatherData.CurrentWeather.WeatherCode, wmoCodeToDescription(weatherData.CurrentWeather.WeatherCode))
+	if len(weatherData.Daily.WindSpeed) > 0 {
+		fmt.Fprintf(&builder, "- Wind speed: %.2f %s\n", weatherData.Daily.WindSpeed[0], weatherData.DailyUnits.WindSpeed)
+	}
+	if len(weatherData.Daily.TemperatureMax) > 0 {
+		fmt.Fprintf(&builder, "- Max temperature: %.2f %s\n", weatherData.Daily.TemperatureMax[0], weatherData.DailyUnits.TemperatureMax)
+	}
+	if len(weatherData.Daily.TemperatureMin) > 0 {
+		fmt.Fprintf(&builder, "- Min temperature: %.2f %s\n", weatherData.Daily.TemperatureMin[0], weatherData.DailyUnits.TemperatureMin)
+	}
+	if len(weatherData.Daily.Rain) > 0 {
+		fmt.Fprintf(&builder, "- Rainfall: %.2f %s\n", weatherData.Daily.Rain[0], weatherData.DailyUnits.Rain)
+	}
+
+	fmt.Fprintf(&builder, "\nForecast for the next days:\n")
+
+	// Iterate over the daily data and append to the repor
+	for i := 0; i < len(weatherData.Daily.Time); i++ {
+		fmt.Fprintf(&builder, "%s: Max Temp: %.2f %s, Min Temp: %.2f %s, Rain: %.2f %s, Wind Speed: %.2f %s\n",
+			weatherData.Daily.Time[i],
+			weatherData.Daily.TemperatureMax[i], weatherData.DailyUnits.TemperatureMax,
+			weatherData.Daily.TemperatureMin[i], weatherData.DailyUnits.TemperatureMin,
+			weatherData.Daily.Rain[i], weatherData.DailyUnits.Rain,
+			weatherData.Daily.WindSpeed[i], weatherData.DailyUnits.WindSpeed)
+	}
+
+	return []byte(builder.String()), nil
+}
+
+func wmoCodeToDescription(code int) string {
+	switch code {
+	case 0:
+		return "Clear sky"
+	case 1, 2, 3:
+		return "Mainly clear, partly cloudy, and overcast"
+	case 45, 48:
+		return "Fog and depositing rime fog"
+	case 51, 53, 55:
+		return "Drizzle: Light, moderate, and dense intensity"
+	case 56, 57:
+		return "Freezing Drizzle: Light and dense intensity"
+	case 61, 63, 65:
+		return "Rain: Slight, moderate and heavy intensity"
+	case 66, 67:
+		return "Freezing Rain: Light and heavy intensity"
+	case 71, 73, 75:
+		return "Snowfall: Slight, moderate, and heavy intensity"
+	case 77:
+		return "Snow grains"
+	case 80, 81, 82:
+		return "Rain showers: Slight, moderate, and violent"
+	case 85, 86:
+		return "Snow showers slight and heavy"
+	case 95:
+		return "Thunderstorm: Slight and heavy intensity"
+	case 96, 99:
+		return "Thunderstorm with slight and heavy hail"
+	default:
+		return "N/A"
+	}
+}

backend/internal/domain/llm.go

@@ -2,6 +2,7 @@ package domain
 
 import (
 	"context"
+	"encoding/json"
 	"time"
 )
 
@@ -33,6 +34,27 @@ type Message struct {
 	VersionId     string     `db:"_version" json:"_version"`
 }
 
+func (msg *Message) ToolCall2Json() error {
+	if msg.ToolCalls != nil {
+		toolCallJson, err := json.Marshal(&msg.ToolCalls)
+		if err != nil {
+			return err
+		}
+		msg.ToolCallsJson = string(toolCallJson)
+	}
+	return nil
+}
+
+func (msg *Message) Json2toolCall() error {
+	if msg.ToolCallsJson != "" {
+		err := json.Unmarshal([]byte(msg.ToolCallsJson), &msg.ToolCalls)
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
 type ChatWithMessages struct {
 	Chat     *Chat      `json:"chat"`
 	Messages []*Message `json:"messages"`
@@ -44,17 +66,42 @@ type ChatParams struct {
 	OnChunk    StreamCallback
 }
 
-type Tool struct {
+type Tool interface {
+	Name() string
+	Description() string
+	Definition(ctx context.Context) *ToolDefinition
+	Execute(ctx context.Context, input []byte) ([]byte, error)
+}
+
+type ToolDefinition struct {
+	Type     string
+	Function *ToolFunction
+}
+
+type ToolFunction struct {
+	Name        string
+	Description string
+	Parameters  map[string]any
 }
 
 type ToolCall struct {
+	ID       string
+	Type     string
+	Function ToolCallFunction
+	Extra    map[string]map[string]any
+}
+
+type ToolCallFunction struct {
+	Name      string
+	Arguments string
 }
 
 type Chunk struct {
 	Done      bool   `json:"done"`
-	Role      string `json:"role"`
-	Content   string `json:"content"`
-	Reasoning bool
+	ToolName  string `json:"toolName,omitempty"`
+	Role      string `json:"role,omitempty"`
+	Content   string `json:"content,omitempty"`
+	Reasoning bool   `json:"reasoning,omitempty"`
 }
 
 type StreamCallback func(chunk *Chunk)
@@ -69,7 +116,7 @@ const (
 )
 
 type LLMParams struct {
-	Tools           []*Tool
+	Tools           []*ToolDefinition
 	OnChunk         StreamCallback
 	ReasoningEffort string
 }
@@ -83,7 +130,7 @@ type LLMEngine interface {
 		modelID string,
 		params *LLMParams,
 		messages []*Message,
-	) (*Message, error)
+	) *Message
 }
 
 type ChatRepository interface {
@@ -92,6 +139,6 @@ type ChatRepository interface {
 	CreateChat(userID string, chat *Chat) (*Chat, error)
 	UpdateChat(userID string, chat *Chat) (*Chat, error)
 	DeleteChat(userID string, teamID string, id string) error
-	GetChatMessages(userID string, teamID string, id string) ([]*Message, error)
+	GetChatMessages(userID string, teamID string, id string, withToolCallResponses bool) ([]*Message, error)
 	CreateChatMessage(userID string, message *Message) (*Message, error)
 }

backend/internal/http/handlers/chat.go

@@ -2,7 +2,6 @@ package handlers
 
 import (
 	"encoding/json"
-	"log/slog"
 	"net/http"
 	"strconv"
 
@@ -102,12 +101,11 @@ func (h *ChatHandler) NewChatMessage(c *echo.Context) error {
 
 	for {
 		chunk := <-chunkChan
-		slog.Info("Chunk", "role", chunk.Role, "content", chunk.Content, "reasoning", chunk.Reasoning)
+		enc.Encode(chunk)
+		http.NewResponseController(c.Response()).Flush()
 		if chunk.Done {
 			return nil
 		}
-		enc.Encode(chunk)
-		http.NewResponseController(c.Response()).Flush()
 	}
 
 }
@@ -130,6 +128,7 @@ func (h *ChatHandler) Get(c *echo.Context) error {
 	teamID := c.Param("space")
 	chatID := c.Param("id")
 	chatWithMessages, err := h.chatService.GetChatWithMessages(userID, teamID, chatID)
+
 	if err != nil {
 		c.Logger().Error("error getting chat with messages", "error", err)
 		return echo.NewHTTPError(http.StatusBadRequest, "error getting chat")

backend/internal/service/chat/service.go

@@ -120,7 +120,7 @@ func (s *Service) AddChatMessage(
 		return nil, err
 	}
 
-	messages, err := s.repoChat.GetChatMessages(userID, teamID, chatID)
+	messages, err := s.repoChat.GetChatMessages(userID, teamID, chatID, true)
 	if err != nil {
 		return nil, err
 	}
@@ -158,7 +158,7 @@ func (s *Service) GetChatWithMessages(userID string, teamID, chatID string) (*do
 	if err != nil {
 		return nil, err
 	}
-	messages, err := s.repoChat.GetChatMessages(userID, teamID, chatID)
+	messages, err := s.repoChat.GetChatMessages(userID, teamID, chatID, false)
 	if err != nil {
 		return nil, err
 	}
@@ -207,7 +207,7 @@ func (s *Service) runQuery(
 	s.mu.Unlock()
 
 	go func() {
-		_, err := chatSession.run(ctx)
+		err := chatSession.run(ctx)
 		if err != nil {
 			slog.Info("chat session error", "error", err)
 		}

backend/internal/service/chat/session.go

@@ -21,10 +21,16 @@ type ChatSession struct {
 	mu          sync.Mutex
 }
 
-func (s *ChatSession) run(ctx context.Context) (*domain.Message, error) {
+func (s *ChatSession) run(ctx context.Context) error {
 
 	params := &domain.LLMParams{}
 
+	tools := make([]*domain.ToolDefinition, 0)
+	for _, t := range allTools {
+		tools = append(tools, t.Definition(ctx))
+	}
+	params.Tools = tools
+
 	s.mu.Lock()
 	if len(s.subscribers) > 0 {
 		params.OnChunk = func(chunk *domain.Chunk) {
@@ -40,19 +46,66 @@ func (s *ChatSession) run(ctx context.Context) (*domain.Message, error) {
 		Content: s.agent.SystemPrompt,
 	}
 
-	// TODO : loop with tools
-	msg, err := s.llmEngine.Stream(
+	continue_loop := true
+
+	// LOOP on TOOLS
+	for continue_loop {
+		msg := s.llmEngine.Stream(
 			ctx,
 			s.provider,
 			s.modelID,
 			params,
 			append([]*domain.Message{systemPrompt}, s.messages...),
 		)
-	if err != nil {
-		return nil, err
-	}
+
 		msg.ChatID = s.chatID
 		msg.TeamID = s.teamID
 
-	return s.repoChat.CreateChatMessage(s.userID, msg)
+		msg, err := s.repoChat.CreateChatMessage(s.userID, msg)
+		if err != nil {
+			return err
+		}
+		s.messages = append(s.messages, msg)
+
+		// TOOL
+		if len(msg.ToolCalls) > 0 {
+			continue_loop = true
+			for _, tc := range msg.ToolCalls {
+
+				tool := GetTool(tc.Function.Name)
+				output, err := tool.Execute(ctx, []byte(tc.Function.Arguments))
+				var toolResponse *domain.Message
+				if err != nil {
+					toolResponse = &domain.Message{
+						ChatID:     s.chatID,
+						TeamID:     s.teamID,
+						ToolCallID: tc.ID,
+						Role:       string(domain.RoleTool),
+						Content:    "ERROR: " + err.Error(),
+					}
+				} else {
+					toolResponse = &domain.Message{
+						ChatID:     s.chatID,
+						TeamID:     s.teamID,
+						ToolCallID: tc.ID,
+						Role:       string(domain.RoleTool),
+						Content:    string(output),
+					}
+				}
+				toolResponse, err = s.repoChat.CreateChatMessage(s.userID, toolResponse)
+				if err != nil {
+					return err
+				}
+				s.messages = append(s.messages, toolResponse)
+			}
+
+		} else {
+			continue_loop = false
+		}
+		// END TOOL
+
+	}
+	// END LOOP
+
+	return nil
 }

backend/internal/service/chat/tools.go

@@ -0,0 +1,14 @@
+package chat
+
+import "trankilou.fr/lassistanoque/backend/internal/domain"
+
+var allTools = make(map[string]domain.Tool)
+
+func RegisterTool(tool domain.Tool) error {
+	allTools[tool.Name()] = tool
+	return nil
+}
+
+func GetTool(name string) domain.Tool {
+	return allTools[name]
+}

backend/web/src/lib/types/api.ts

@@ -96,22 +96,34 @@ export interface Message  {
   id: string
   role: string
   content: string
+  reasoning?: string
   toolCallId: string
-  toolCalls: Array<string>
+  toolcalls: Array<ToolCall>
   _date_created: string
   _date_updated: string
   _version: string
 }
 
+export interface ToolCall {
+  ID: string
+  Type: string
+  Function: {
+    Name: string
+    Arguments: string
+  }
+}
+
 export type ChatWithMessages = {
   chat: Chat
   messages: Message[]
 }
 
 export type Chunk = {
+  toolName: string
   done: boolean
   role: string
   content: string
+  reasoning: boolean
 }
 
 export type ChatRequest = {

backend/web/src/routes/(authenticated)/[space]/(chat)/[conversation]/+page.svelte

@@ -10,6 +10,7 @@
 	let prompt = $state("")
 	let { data }: PageProps = $props();
 	let messages = $state([] as Message[])
+	let waiting = $state(false)
 
     onMount(async ()=>{
       if (page.state.prompt) {
@@ -26,19 +27,54 @@
     const sendRequest = async(theprompt:string) => {
       prompt = ""
       let lastrole=""
-      //let reasoning = false
+      let lastToolName=""
+      waiting = true
+
       for await (const chunk of chatApi.createChatMessage(data.spaceId, data.chatId, { prompt: theprompt })) {
-        if (chunk.role!=lastrole) {
+        if (waiting && chunk.role==="assistant") {
+          waiting = false
+        }
+
+        if (chunk.role!=lastrole || chunk.toolName!=lastToolName) {
           const currentDate = new Date()
-          messages.push({
+          let m = {
             id: ''+currentDate.getTime(),
             role: chunk.role,
-            content: chunk.content,
-          } as Message)
+            content: "",
+            reasoning: "",
+          } as Message
+          if (chunk.toolName) {
+            m.toolcalls = [{
+              ID: "0",
+              Type: "Function",
+              Function: {
+                Name: chunk.toolName,
+                Arguments: ""
+              }
+            }]
+          }
+          if (chunk.reasoning) {
+            m.reasoning = chunk.content
+          } else {
+            m.content = chunk.content
+          }
+          messages.push(m)
           lastrole=chunk.role
+          lastToolName=chunk.toolName
+        } else {
+          if (chunk.reasoning) {
+            messages[messages.length-1].reasoning += chunk.content
           } else {
             messages[messages.length-1].content += chunk.content
           }
+        }
+
+        if (chunk.done) {
+          document
+              .querySelectorAll<HTMLDivElement>('div.reasoning:not(.hidden)')
+              .forEach((el) => el.classList.add('hidden'));
+        }
+
         historyDiv.scrollTop = historyDiv.scrollHeight;
       }
     }
@@ -52,11 +88,23 @@
     <div id="history" class="flex-1 container overflow-auto" bind:this={historyDiv}>
         {#each messages as message (message.id)}
             <div class={["message", "rounded", message.role]}>
-                <div class="message-content">
-                    <SvelteMarkdown source={message.content} />
+                {#if message.reasoning }
+                <div class="message-content reasoning">
+                    <SvelteMarkdown source={message.reasoning} streaming={true}/>
                 </div>
+                {/if}
+                {#if message.toolcalls != null && message.toolcalls.length>0}
+                    <div class="text-green-600">⚒️ Appel de l'outil {message.toolcalls[0].Function.Name}</div>
+                {:else}
+                    <div class="message-content">
+                        <SvelteMarkdown source={message.content} streaming={true}/>
+                    </div>
+                {/if}
             </div>
         {/each}
+        {#if waiting}
+            <div class="animate-pulse">...</div>
+        {/if}
     </div>
     <div id="prompt" class="container">
        <form class="request flex w-full" onsubmit={handleOnSubmit}>

backend/web/src/routes/layout.css

@@ -275,21 +275,19 @@ h2 {
 /*  chat */
 
 .message {
-	@apply m-2 rounded p-2;
+	@apply rounded p-2;
 
 	&.user {
 		@apply bg-sky-700 dark:text-white;
 	}
-
-	&.assistant {
-		&.reasoning {
-			@apply text-white/50;
-		}
-	}
 }
 
 .message-content {
 	@apply text-sm;
+
+	&.reasoning {
+		@apply text-white/50;
+	}
 }
 
 .message-content p {