package api

import (
	"fmt"
	"io"
	"net/http"
	"time"

	"github.com/claudia/docs-cli/pkg/types"
)

// FoldersClient handles folder API calls
type FoldersClient struct {
	client *Client
}

// NewFoldersClient creates a new folders client
func NewFoldersClient(c *Client) *FoldersClient {
	return &FoldersClient{client: c}
}

// List lists folders in a project
func (f *FoldersClient) List(projectID, parentID string) ([]types.Folder, error) {
	path := "/projects/" + projectID + "/folders"
	if parentID != "" {
		path += "?parent_id=" + parentID
	}

	resp, err := f.client.doRequest(http.MethodGet, path, nil)
	if err != nil {
		return nil, err
	}
	defer resp.Body.Close()

	body, err := io.ReadAll(resp.Body)
	if err != nil {
		return nil, fmt.Errorf("failed to read response: %w", err)
	}

	if resp.StatusCode != http.StatusOK {
		return nil, handleError(resp, body)
	}

	var folderResp types.Response
	if err := decodeJSON(body, &folderResp); err != nil {
		return nil, err
	}

	return sliceToFolders(folderResp.Data), nil
}

// Create creates a new folder
func (f *FoldersClient) Create(projectID string, req types.CreateFolderRequest) (*types.Folder, error) {
	resp, err := f.client.doRequest(http.MethodPost, "/projects/"+projectID+"/folders", req)
	if err != nil {
		return nil, err
	}
	defer resp.Body.Close()

	body, err := io.ReadAll(resp.Body)
	if err != nil {
		return nil, fmt.Errorf("failed to read response: %w", err)
	}

	if resp.StatusCode != http.StatusCreated && resp.StatusCode != http.StatusOK {
		return nil, handleError(resp, body)
	}

	var folderResp types.Response
	if err := decodeJSON(body, &folderResp); err != nil {
		return nil, err
	}

	folder, ok := folderResp.Data.(map[string]interface{})
	if !ok {
		return nil, fmt.Errorf("unexpected response format")
	}

	return mapToFolder(folder), nil
}

// Get gets a folder by ID
func (f *FoldersClient) Get(id string) (*types.Folder, error) {
	resp, err := f.client.doRequest(http.MethodGet, "/folders/"+id, nil)
	if err != nil {
		return nil, err
	}
	defer resp.Body.Close()

	body, err := io.ReadAll(resp.Body)
	if err != nil {
		return nil, fmt.Errorf("failed to read response: %w", err)
	}

	if resp.StatusCode != http.StatusOK {
		return nil, handleError(resp, body)
	}

	var folderResp types.Response
	if err := decodeJSON(body, &folderResp); err != nil {
		return nil, err
	}

	folder, ok := folderResp.Data.(map[string]interface{})
	if !ok {
		return nil, fmt.Errorf("unexpected response format")
	}

	return mapToFolder(folder), nil
}

func mapToFolder(m map[string]interface{}) *types.Folder {
	folder := &types.Folder{}
	if v, ok := m["id"].(string); ok {
		folder.ID = v
	}
	if v, ok := m["name"].(string); ok {
		folder.Name = v
	}
	if v, ok := m["project_id"].(string); ok {
		folder.ProjectID = v
	}
	if v, ok := m["parent_id"].(string); ok {
		folder.ParentID = v
	}
	if v, ok := m["created_at"].(string); ok {
		folder.CreatedAt, _ = time.Parse(time.RFC3339, v)
	}
	if v, ok := m["updated_at"].(string); ok {
		folder.UpdatedAt, _ = time.Parse(time.RFC3339, v)
	}
	return folder
}

func sliceToFolders(data interface{}) []types.Folder {
	var folders []types.Folder
	if arr, ok := data.([]interface{}); ok {
		for _, item := range arr {
			if m, ok := item.(map[string]interface{}); ok {
				folders = append(folders, *mapToFolder(m))
			}
		}
	}
	return folders
}