(in-package #:nekod.docker)

(defun pull-image (sock name &optional (tag "latest"))
  "Pull a Docker image from a registry.
   name — image name, e.g. \"nginx\" or \"registry.example.com/myapp\"
   tag  — image tag, defaults to \"latest\"
   Returns the event stream body as a string."
  (docker-post sock (format nil "/images/create?fromImage=~a&tag=~a" name tag)))

(defun list-images (sock &optional (all nil))
  "List locally available Docker images.
   all=t includes intermediate images.
   Returns JSON body as a string."
  (multiple-value-bind (status body)
      (docker-get sock (format nil "/images/json?all=~a" (if all 1 0)))
    (if (= status 200) body
        (error 'nekod:docker-api-error :message body :status-code status
               :endpoint "/images/json"))))

(defun inspect-image (sock id)
  "Inspect a Docker image by ID or name. Returns full JSON metadata as a string."
  (multiple-value-bind (status body)
      (docker-get sock (format nil "/images/~a/json" id))
    (if (= status 200) body
        (error 'nekod:docker-api-error :message body :status-code status
               :endpoint (format nil "/images/~a/json" id)))))

(defun remove-image (sock id &optional (force nil) (no-prune nil))
  "Remove a Docker image by ID or name.
   force    — force removal even if the image is in use
   no-prune — do not delete untagged parent images
   Returns JSON body on success."
  (multiple-value-bind (status body)
      (docker-delete sock (format nil "/images/~a?force=~a&noprune=~a"
                                  id
                                  (if force "true" "false")
                                  (if no-prune "true" "false")))
    (if (member status '(200 204)) body
        (error 'nekod:docker-api-error :message body :status-code status
               :endpoint (format nil "/images/~a" id)))))

(defun tag-image (sock id repo tag)
  "Re-tag a Docker image.
   id   — source image ID or name
   repo — target repository name
   tag  — target tag
   Returns t on success."
  (multiple-value-bind (status body)
      (docker-post sock (format nil "/images/~a/tag?repo=~a&tag=~a" id repo tag))
    (if (= status 201) t
        (error 'nekod:docker-api-error :message body :status-code status
               :endpoint (format nil "/images/~a/tag" id)))))

(defun prune-images (sock)
  "Remove all dangling (untagged, unreferenced) images.
   Returns JSON summary as a string."
  (multiple-value-bind (status body)
      (docker-post sock "/images/prune")
    (if (= status 200) body
        (error 'nekod:docker-api-error :message body :status-code status
               :endpoint "/images/prune"))))