refactor(api): restructured API for type safety, maintainability and docs generation

- These changes makes the API incombatible with previous versions
- Added new types for error handling, success responses, and health checks.
- Updated health check logic to utilize the new types for better clarity and structure.
- Refactored existing handlers to improve response consistency and error handling.
- Updated Makefile to include a new target for generating API types from Swagger.
- Updated "new agent" API to respond an encrypted cert pair

internal/api/v1/docker/logs.go

@@ -0,0 +1,112 @@
+package dockerapi
+
+import (
+	"context"
+	"errors"
+	"net/http"
+
+	"github.com/docker/docker/api/types/container"
+	"github.com/docker/docker/pkg/stdcopy"
+	"github.com/gin-gonic/gin"
+	"github.com/rs/zerolog/log"
+	apitypes "github.com/yusing/go-proxy/internal/api/types"
+	"github.com/yusing/go-proxy/internal/net/gphttp/websocket"
+	"github.com/yusing/go-proxy/internal/task"
+)
+
+type LogsPathParams struct {
+	Server      string `uri:"server" binding:"required"`
+	ContainerID string `uri:"container" binding:"required"`
+} //	@name	LogsPathParams
+
+type LogsQueryParams struct {
+	Stdout bool   `form:"stdout,default=true"`
+	Stderr bool   `form:"stderr,default=true"`
+	Since  string `form:"from"`
+	Until  string `form:"to"`
+	Levels string `form:"levels"`
+} //	@name	LogsQueryParams
+
+// @BasePath		/api/v1
+// @Summary		Get docker container logs
+// @Description	Get docker container logs
+// @Tags			docker,websocket
+// @Accept			json
+// @Produce		json
+// @Param			server		path	string	true	"server name"
+// @Param			container	path	string	true	"container id"
+// @Param			stdout		query	bool	false	"show stdout"
+// @Param			stderr		query	bool	false	"show stderr"
+// @Param			from		query	string	false	"from timestamp"
+// @Param			to			query	string	false	"to timestamp"
+// @Param			levels		query	string	false	"levels"
+// @Success		200
+// @Failure		400	{object}	apitypes.ErrorResponse
+// @Failure		403	{object}	apitypes.ErrorResponse
+// @Failure		404	{object}	apitypes.ErrorResponse
+// @Failure		500	{object}	apitypes.ErrorResponse
+// @Router			/docker/logs/{server}/{container} [get]
+func Logs(c *gin.Context) {
+	var pathParams LogsPathParams
+	var queryParams LogsQueryParams
+	if err := c.ShouldBindQuery(&queryParams); err != nil {
+		c.JSON(http.StatusBadRequest, apitypes.Error("invalid query params"))
+		return
+	}
+	if err := c.ShouldBindUri(&pathParams); err != nil {
+		c.JSON(http.StatusBadRequest, apitypes.Error("invalid path params"))
+		return
+	}
+	// TODO: implement levels
+
+	dockerClient, found, err := getDockerClient(pathParams.Server)
+	if err != nil {
+		c.Error(apitypes.InternalServerError(err, "failed to get docker client"))
+		return
+	}
+	if !found {
+		c.JSON(http.StatusNotFound, apitypes.Error("server not found"))
+		return
+	}
+	defer dockerClient.Close()
+
+	opts := container.LogsOptions{
+		ShowStdout: queryParams.Stdout,
+		ShowStderr: queryParams.Stderr,
+		Since:      queryParams.Since,
+		Until:      queryParams.Until,
+		Timestamps: true,
+		Follow:     true,
+		Tail:       "100",
+	}
+	if queryParams.Levels != "" {
+		opts.Details = true
+	}
+
+	logs, err := dockerClient.ContainerLogs(c.Request.Context(), pathParams.ContainerID, opts)
+	if err != nil {
+		c.Error(apitypes.InternalServerError(err, "failed to get container logs"))
+		return
+	}
+	defer logs.Close()
+
+	manager, err := websocket.NewManagerWithUpgrade(c)
+	if err != nil {
+		c.Error(apitypes.InternalServerError(err, "failed to create websocket manager"))
+		return
+	}
+	defer manager.Close()
+
+	writer := manager.NewWriter(websocket.TextMessage)
+
+	_, err = stdcopy.StdCopy(writer, writer, logs) // de-multiplex logs
+	if err != nil {
+		if errors.Is(err, context.Canceled) || errors.Is(err, task.ErrProgramExiting) {
+			return
+		}
+		log.Err(err).
+			Str("server", pathParams.Server).
+			Str("container", pathParams.ContainerID).
+			Msg("failed to de-multiplex logs")
+	}
+}