(define-module (metznet golang)
  #:use-module (guix packages)
  #:use-module (gnu packages golang)
  #:use-module (gnu packages golang-check)
  #:use-module (guix build download)
  #:use-module (guix git-download)
  #:use-module (guix memoization)
  #:use-module ((guix licenses)
                #:prefix license:)
  #:use-module (guix build-system go)
  #:use-module (guix utils)
  #:use-module (guix gexp)

  #:export (go-gopkg-in-asn1-ber-v1 metznet-pubkey))

(define-public go-1.21
  (package
    (inherit go-1.20)
    (name "go")
    (version "1.21.4")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/golang/go")
             (commit (string-append "go" version))))
       (file-name (git-file-name name version))
       (sha256
        (base32 "0xp1mqjbbs53bjg00d4a37af5p1by28xnflj2xi5kchcpmlqn5nz"))))
    (arguments
     (substitute-keyword-arguments (package-arguments go-1.20)
       ;; Source patching phases are broken up into discrete steps to allow
       ;; future versions to discard individual phases without having to
       ;; discard all source patching.
       ((#:phases phases)
        #~(modify-phases #$phases
            (replace 'install
              (lambda* (#:key outputs #:allow-other-keys)
                ;; Notably, we do not install archives (180M), which Go will
                ;; happily recompile quickly (and cache) if needed, almost
                ;; surely faster than they could be substituted.
                ;;
                ;; The main motivation for pre-compiled archives is to use
                ;; libc-linked `net' or `os' packages without a C compiler,
                ;; but on Guix a C compiler is necessary to properly link the
                ;; final binaries anyway.  Many build flags also invalidate
                ;; these pre-compiled archives, so in practice Go often
                ;; recompiles them anyway.
                ;;
                ;; Upstream is also planning to no longer install these
                ;; archives: <https://github.com/golang/go/issues/47257>
                ;;
                ;; When necessary, a custom pre-compiled library package can
                ;; be created with `#:import-path "std"' and used with
                ;; `-pkgdir'.
                ;;
                ;; When moving files into place, any files that come from
                ;; GOROOT should remain in GOROOT to continue functioning. If
                ;; they need to be referenced from some other directory, they
                ;; need to be symlinked from GOROOT. For more information,
                ;; please see https://github.com/golang/go/issues/61921
                (let* ((out (assoc-ref outputs "out"))
                       (tests (assoc-ref outputs "tests")))
                  (for-each (lambda (file)
                              (copy-recursively file
                                                (string-append out "/lib/go/"
                                                               file)))
                            '("bin" "go.env" "lib" "VERSION" "pkg/include"
                              "pkg/tool"))

                  (symlink "lib/go/bin"
                           (string-append out "/bin"))

                  (for-each (match-lambda
                              ((file dest output)
                               ;; Copy to output/dest and symlink from output/lib/go/file.
                               (let ((file* (string-append output "/lib/go/"
                                                           file))
                                     (dest* (string-append output "/" dest)))
                                 (copy-recursively file dest*)
                                 (mkdir-p (dirname file*))
                                 (symlink (string-append "../../" dest) file*))))
                            `(("src" "share/go/src"
                               ,out)
                              ("misc" "share/go/misc"
                               ,out)
                              ("doc" "share/doc/go/doc"
                               ,out)
                              ("api" "share/go/api"
                               ,tests)
                              ("test" "share/go/test"
                               ,tests))))))
            (delete 'skip-TestGoPathShlibGccgo-tests)
            (delete 'patch-source)
            (add-after 'unpack 'patch-os-tests
              (lambda _
                (substitute* "src/os/os_test.go"
                  (("/usr/bin")
                   (getcwd))
                  (("/bin/sh")
                   (which "sh")))))

            (add-after 'unpack 'apply-patches
              (lambda* (#:key inputs #:allow-other-keys)
                ;; Having the patch in the 'patches' field of <origin> breaks
                ;; the 'TestServeContent' test due to the fact that
                ;; timestamps are reset.  Thus, apply it from here.
                (invoke "patch" "-p1" "--force" "-i"
                        (assoc-ref inputs "go-fix-script-tests.patch"))))

            (add-after 'unpack 'patch-src/net
              (lambda* (#:key inputs #:allow-other-keys)
                (let ((net-base (assoc-ref inputs "net-base")))
                  (substitute* "src/net/lookup_unix.go"
                    (("/etc/protocols")
                     (string-append net-base "/etc/protocols")))
                  (substitute* "src/net/port_unix.go"
                    (("/etc/services")
                     (string-append net-base "/etc/services"))))))

            (add-after 'unpack 'patch-zoneinfo
              (lambda* (#:key inputs #:allow-other-keys)
                ;; Add the path to this specific version of tzdata's zoneinfo
                ;; file to the top of the list to search. We don't want to
                ;; replace any sources because it will affect how binaries
                ;; compiled with this Go toolchain behave on non-guix
                ;; platforms.
                (substitute* "src/time/zoneinfo_unix.go"
                  (("var platformZoneSources.+" all)
                   (format #f "~a~%\"~a/share/zoneinfo\",~%" all
                           (assoc-ref inputs "tzdata"))))))

            (add-after 'unpack 'patch-cmd/go/testdata/script
              (lambda _
                (substitute* "src/cmd/go/testdata/script/cgo_path_space.txt"
                  (("/bin/sh")
                   (which "sh")))))

            (add-after 'enable-external-linking 'enable-external-linking-1.21
              (lambda _
                ;; Invoke GCC to link any archives created with GCC (that is, any
                ;; packages built using 'cgo'), because Go doesn't know how to
                ;; handle the runpaths but GCC does.  Use substitute* rather than
                ;; a patch since these files are liable to change often.
                ;;
                ;; XXX: Replace with GO_EXTLINK_ENABLED=1 or similar when
                ;; <https://github.com/golang/go/issues/31544> and/or
                ;; <https://github.com/golang/go/issues/43525> are resolved.
                (substitute* "src/cmd/link/internal/ld/config.go"
                  (("\\(iscgo && \\(.+\\)")
                   "iscgo"))
                (substitute* "src/internal/testenv/testenv.go"
                  (("!CanInternalLink.+")
                   "true {\n"))
                (substitute* "src/syscall/exec_linux_test.go"
                  (("testenv.MustHaveExecPath\\(t, \"whoami\"\\)")
                   "t.Skipf(\"no passwd file present\")"))))))))))

(define-public go-github-com-azure-go-ntlmssp
  (package
    (name "go-github-com-azure-go-ntlmssp")
    (version "0.0.0")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/Azure/go-ntlmssp.git")
             (commit "754e69321358ada85ce213a4ec971d3e4d1bfdf7")))
       (file-name (git-file-name name version))
       (sha256
        (base32 "0dg20fwylf5lpsc5fgnnzw7jxz0885bg97lla1b5wrlhjas6lidn"))))
    (build-system go-build-system)
    (native-inputs `(("go-golang-org-x-crypto" ,go-golang-org-x-crypto)))
    (arguments
     '(#:phases (modify-phases %standard-phases
                  (delete 'check))
       #:import-path "github.com/Azure/go-ntlmssp"))
    (home-page "https://github.com/Azure/go-ntlmssp")
    (synopsis
     "Golang package that provides NTLM/Negotiate authentication over HTTP")
    (description
     "Protocol details from https://msdn.microsoft.com/en-us/library/cc236621.aspx Implementation hints from http://davenport.sourceforge.net/ntlm.html
This package only implements authentication, no key exchange or encryption. It only supports Unicode (UTF16LE) encoding of protocol strings, no OEM encoding. This package implements NTLMv2.")
    (license license:expat)))

(define-public go-github-com-go-asn1-ber
  (package
    (name "go-github-com-go-asn1-ber")
    (version "1.5.5")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/go-asn1-ber/asn1-ber.git")
             (commit "04301b4b1c5ff66221f8f8a394f814a9917d678a")))
       (file-name (git-file-name name version))
       (sha256
        (base32 "1k9yqv963jqwl3i14069pf62il2kjqhg096f6sq55s4qykklpz98"))))
    (build-system go-build-system)
    (arguments
     '(#:import-path "github.com/go-asn1-ber/asn1-ber"))
    (home-page "https://github.com/go-asn1-ber/asn1-ber")
    (synopsis
     "ASN1 BER Encoding / Decoding Library for the GO programming language.")
    (description
     "Working: Very basic encoding / decoding needed for LDAP protocol")
    (license license:expat)))

(define-public go-github-com-go-ldap-ldap
  (package
    (name "go-github-com-go-ldap-ldap")
    (version "3.4.6")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/go-ldap/ldap.git")
             (commit (string-append "v" version))))
       (file-name (git-file-name name version))
       (sha256
        (base32 "019j58rhkqp3dnn3c9nj7bjc1h52fs7i0lml5gdwhwn837c0aahb"))))
    (build-system go-build-system)
    (propagated-inputs `(("go-github-com-azure-go-ntlmssp" ,go-github-com-azure-go-ntlmssp)
                         ("go-golang-org-x-crypto" ,go-golang-org-x-crypto)
                         ("go-github-com-google-uuid" ,go-github-com-google-uuid)
                         ("go-github-com-go-asn1-ber" ,go-github-com-go-asn1-ber)
                         ("go-github-com-stretchr-testify" ,go-github-com-stretchr-testify)))
    (arguments
     '(#:phases (modify-phases %standard-phases
                  (delete 'check))
       #:import-path "github.com/go-ldap/ldap"))
    (home-page "https://github.com/go-ldap/ldap")
    (synopsis "Basic LDAP v3 functionality for the GO programming language.")
    (description
     "Basic LDAP v3 functionality for the GO programming language.")
    (license license:expat)))

(define-public metznet-pubkey
  (package
    (name "metznet-pubkey")
    (version "1.0.0")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://git.metznet.ca/metznet/pubkey.git")
             (commit (string-append "v" version))))
       (file-name (string-append name "-" version "-checkout"))
       (sha256
        (base32 "1074knwjakwzdlg10xbm0m6qzi4i3bbp452q9b7jm52gbalk3hzb"))))
    (build-system go-build-system)
    (arguments
     `(#:import-path "git.metznet.ca/Metznet/pubkey"))
    (native-inputs `(("go-github-com-go-ldap-ldap" ,go-github-com-go-ldap-ldap)
                     ("go-github-com-go-asn1-ber" ,go-github-com-go-asn1-ber)))
    (synopsis "Get public key from ldap")
    (description
     "This package provides a command-line tool to get public keys from an ldap server")
    (home-page "https://git.metznet.ca/metznet/pubkey.git")
    (license license:bsd-3)))