1 files changed, 219 insertions, 0 deletions
diff --git a/internal/api/trello.go b/internal/api/trello.go
new file mode 100644
index 0000000..899f6df
--- /dev/null
+++ b/internal/api/trello.go
@@ -0,0 +1,219 @@
+package api
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"time"
+
+	"task-dashboard/internal/models"
+)
+
+const (
+	trelloBaseURL = "https://api.trello.com/1"
+)
+
+// TrelloClient handles interactions with the Trello API
+type TrelloClient struct {
+	apiKey     string
+	token      string
+	httpClient *http.Client
+}
+
+// NewTrelloClient creates a new Trello API client
+func NewTrelloClient(apiKey, token string) *TrelloClient {
+	return &TrelloClient{
+		apiKey: apiKey,
+		token:  token,
+		httpClient: &http.Client{
+			Timeout: 30 * time.Second,
+		},
+	}
+}
+
+// trelloBoardResponse represents a board from the API
+type trelloBoardResponse struct {
+	ID   string `json:"id"`
+	Name string `json:"name"`
+}
+
+// trelloCardResponse represents a card from the API
+type trelloCardResponse struct {
+	ID      string  `json:"id"`
+	Name    string  `json:"name"`
+	IDList  string  `json:"idList"`
+	Due     *string `json:"due"`
+	URL     string  `json:"url"`
+	Desc    string  `json:"desc"`
+	IDBoard string  `json:"idBoard"`
+}
+
+// trelloListResponse represents a list from the API
+type trelloListResponse struct {
+	ID   string `json:"id"`
+	Name string `json:"name"`
+}
+
+// GetBoards fetches all boards for the authenticated user
+func (c *TrelloClient) GetBoards(ctx context.Context) ([]models.Board, error) {
+	url := fmt.Sprintf("%s/members/me/boards?key=%s&token=%s", trelloBaseURL, c.apiKey, c.token)
+
+	req, err := http.NewRequestWithContext(ctx, "GET", url, nil)
+	if err != nil {
+		return nil, fmt.Errorf("failed to create request: %w", err)
+	}
+
+	resp, err := c.httpClient.Do(req)
+	if err != nil {
+		return nil, fmt.Errorf("failed to fetch boards: %w", err)
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		body, _ := io.ReadAll(resp.Body)
+		return nil, fmt.Errorf("trello API error (status %d): %s", resp.StatusCode, string(body))
+	}
+
+	var apiBoards []trelloBoardResponse
+	if err := json.NewDecoder(resp.Body).Decode(&apiBoards); err != nil {
+		return nil, fmt.Errorf("failed to decode response: %w", err)
+	}
+
+	// Convert to our model
+	boards := make([]models.Board, 0, len(apiBoards))
+	for _, apiBoard := range apiBoards {
+		board := models.Board{
+			ID:    apiBoard.ID,
+			Name:  apiBoard.Name,
+			Cards: []models.Card{}, // Will be populated by GetCards
+		}
+		boards = append(boards, board)
+	}
+
+	return boards, nil
+}
+
+// GetCards fetches all cards for a specific board
+func (c *TrelloClient) GetCards(ctx context.Context, boardID string) ([]models.Card, error) {
+	url := fmt.Sprintf("%s/boards/%s/cards?key=%s&token=%s", trelloBaseURL, boardID, c.apiKey, c.token)
+
+	req, err := http.NewRequestWithContext(ctx, "GET", url, nil)
+	if err != nil {
+		return nil, fmt.Errorf("failed to create request: %w", err)
+	}
+
+	resp, err := c.httpClient.Do(req)
+	if err != nil {
+		return nil, fmt.Errorf("failed to fetch cards: %w", err)
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		body, _ := io.ReadAll(resp.Body)
+		return nil, fmt.Errorf("trello API error (status %d): %s", resp.StatusCode, string(body))
+	}
+
+	var apiCards []trelloCardResponse
+	if err := json.NewDecoder(resp.Body).Decode(&apiCards); err != nil {
+		return nil, fmt.Errorf("failed to decode response: %w", err)
+	}
+
+	// Fetch lists to get list names
+	lists, err := c.getLists(ctx, boardID)
+	if err != nil {
+		// If we can't get lists, continue with empty list names
+		lists = make(map[string]string)
+	}
+
+	// Convert to our model
+	cards := make([]models.Card, 0, len(apiCards))
+	for _, apiCard := range apiCards {
+		card := models.Card{
+			ID:       apiCard.ID,
+			Name:     apiCard.Name,
+			ListID:   apiCard.IDList,
+			ListName: lists[apiCard.IDList],
+			URL:      apiCard.URL,
+		}
+
+		// Parse due date if present
+		if apiCard.Due != nil && *apiCard.Due != "" {
+			dueDate, err := time.Parse(time.RFC3339, *apiCard.Due)
+			if err == nil {
+				card.DueDate = &dueDate
+			}
+		}
+
+		cards = append(cards, card)
+	}
+
+	return cards, nil
+}
+
+// getLists fetches lists for a board and returns a map of list ID to name
+func (c *TrelloClient) getLists(ctx context.Context, boardID string) (map[string]string, error) {
+	url := fmt.Sprintf("%s/boards/%s/lists?key=%s&token=%s", trelloBaseURL, boardID, c.apiKey, c.token)
+
+	req, err := http.NewRequestWithContext(ctx, "GET", url, nil)
+	if err != nil {
+		return nil, fmt.Errorf("failed to create request: %w", err)
+	}
+
+	resp, err := c.httpClient.Do(req)
+	if err != nil {
+		return nil, fmt.Errorf("failed to fetch lists: %w", err)
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		body, _ := io.ReadAll(resp.Body)
+		return nil, fmt.Errorf("trello API error (status %d): %s", resp.StatusCode, string(body))
+	}
+
+	var apiLists []trelloListResponse
+	if err := json.NewDecoder(resp.Body).Decode(&apiLists); err != nil {
+		return nil, fmt.Errorf("failed to decode response: %w", err)
+	}
+
+	// Convert to map
+	lists := make(map[string]string, len(apiLists))
+	for _, list := range apiLists {
+		lists[list.ID] = list.Name
+	}
+
+	return lists, nil
+}
+
+// GetBoardsWithCards fetches all boards and their cards in one call
+func (c *TrelloClient) GetBoardsWithCards(ctx context.Context) ([]models.Board, error) {
+	boards, err := c.GetBoards(ctx)
+	if err != nil {
+		return nil, err
+	}
+
+	// Fetch cards for each board
+	for i := range boards {
+		cards, err := c.GetCards(ctx, boards[i].ID)
+		if err != nil {
+			// Log error but continue with other boards
+			continue
+		}
+		boards[i].Cards = cards
+	}
+
+	return boards, nil
+}
+
+// CreateCard creates a new card (for Phase 2)
+func (c *TrelloClient) CreateCard(ctx context.Context, listID, name, description string, dueDate *time.Time) (*models.Card, error) {
+	// This will be implemented in Phase 2
+	return nil, fmt.Errorf("not implemented yet")
+}
+
+// UpdateCard updates a card (for Phase 2)
+func (c *TrelloClient) UpdateCard(ctx context.Context, cardID string, updates map[string]interface{}) error {
+	// This will be implemented in Phase 2
+	return fmt.Errorf("not implemented yet")
+}