# SPDX-License-Identifier: GPL-1.0-or-later
# Copyright (C) 2018-2020 redhat-rpm-config contributors

# Computes forge-related variables for use in the rest of the spec file
# Control variables, flags and arguments:
#   %{forgeurl<number>}  the project url on the target forge
#   %{tag<number>}       the packaged tag, OR
#   %{commit<number>}    the packaged commit, OR
#   %{version<number>}   the packaged version
#                          – %{version}/%{version0} are set via:
#                              Version:
#                          – because git is lacking a built-in version
#                            reference, %{version<number>} will be translated
#                            into %{tag<number>} using unreliable heuristics;
#                            set %{tag<number>} directly if those fail
#   %{date<number>}      the packaged timestamp
#   …                    %forgemeta will compute a huge number of variables:
#                          — the packager can override it by setting some of
#                            those before the %forgemeta call
#                          – use the -i flag to list those variables
#   -z <number>          only process the zth block of definitions
#                        "" for the no-suffix block
#   -i                   list the resulting variable values
#   -s                   silently ignore problems in %{forgeurl<number>}
#   -v                   be verbose
#   -a                   process all sources in one go, instead of using
#                        separate -z calls
%forgemeta(z:isva) %{lua:
local      fedora = require "fedora.common"
local       forge = require "fedora.srpm.forge"
local     verbose =  rpm.expand("%{-v}") ~= ""
local informative =  rpm.expand("%{-i}") ~= ""
local      silent =  rpm.expand("%{-s}") ~= ""
local  processall = (rpm.expand("%{-a}") ~= "") and (rpm.expand("%{-z}") == "")
if processall then
  for _,s in pairs(fedora.getsuffixes("forgeurl")) do
    forge.meta(s,verbose,informative,silent)
  end
else
  forge.meta(rpm.expand("%{-z*}"),verbose,informative,silent)
end
}

# Unpacks sources computed by %forgemeta
# Control variables, flags and arguments:
#   %{forgesource<number>}       the source archive that will be processed
#   %{forgesetupargs<number>}    %setup arguments

#   -z <number>                  only process the zth block of definitions
#                                "" for the no-suffix block
#   -v                           be verbose
#   -a                   process all sources in one go, instead of using
#                        separate -z calls
%forgesetup(z:va) %{lua:
local fedora = require "fedora.common"
if (rpm.expand("%{-z}") == "") and (rpm.expand("%{-a}") ~= "") then
  for _,s in pairs(fedora.getsuffixes("forgesetupargs")) do
    print(rpm.expand("%setup %{!-v:-q} %{?forgesetupargs" .. s                     .. "}\\n"))
  end
else
  print(  rpm.expand("%setup %{!-v:-q} %{?forgesetupargs" .. rpm.expand("%{-z*}") .. "}\\n"))
end
}

# Calls %autosetup using %forgemeta results
#   – this will probably be removed since it is unsafe in presence of multiple
#     sources
# Control variables, flags and arguments:
#   -z <number>  process the zth block of definitions
#   -v -N -S -p  relayed to %autosetup
%forgeautosetup(z:vNS:p:q) %{lua:
print(rpm.expand("%autosetup %{-v} %{-N} %{?-S} %{?-p} %{?forgesetupargs" .. rpm.expand("%{-z*}") .. "}\\n"))
}

# Appends the values of %_forgeversionsuffix<number> that %forgemeta sets
# to Version.
# This follows the new Versioning Guidelines that discourage putting release
# snapshot info in Release.
#
# If no %forgeversionsuffix<number> is set,
# the value is equivalent to %version.
#
# By default, %version and the suffix are separated with a '^'.
#
# Control variables, flags and arguments:
#   -p           Use the pre-release separator '~' instead of '^'
#   -z <number>  Only add the release suffix for a specific block.
#                By default, -z0 is used.
#   -a           Concatenate the release suffixes for all blocks
#   -b           Base version to use. Defaults to %version0

# For example:
#   %global forgeurl https://github.com/foo/bar
#   %global version0 2.15.0
#   %global commit <POST RELEASE SNAPSHOT>
#   %forgemeta
#   [....]
#   Version: %{forgeversion}

%forgeversion(pz:ab:) %{lua:
local fedora = require "fedora.common"
local util = require "fedora.srpm._forge_util"
\
-- Zero-alias version/version0 macros
fedora.zalias({"version", "distprefix", "_forgeversionsuffix"}, nil)
\
-- Determine the seperator
local sep = "^"
if util.get_flag("p") then
    sep = "~"
end
\
-- Release uses %dist and %distprefix, so we need to make sure it's not used before
if util.is_defined("release") then
    rpm.expand(
      "%{warn:'Version: %%forgeversion' must be invoked before setting Release.}"
    )
end
\
-- Determine baseversion
local baseversion = util.get_flag("b", true) or util.get_macro("version0")
if not baseversion then
  rpm.expand(
    "%{error:You must define %%version0" ..
    " (%%global version0 <VERSION>) prior to invoking this macro.}"
  )
end
\
-- Concatenate parts. Clear out %distprefix* to avoid duplicating data in Release.
-- forgemeta stores the same values in _forgeversionsuffix so we can run
-- forgeversion multiple times.
local part = ""
rpm.undefine("distprefix")
if util.get_flag("a") then
  for i=0,9999 do
    local curpart = util.get_macro("_forgeversionsuffix" .. i)
    if curpart then
      part = part .. curpart
    end
    rpm.undefine("distprefix" .. i)
  end
else
  local i = util.get_flag("z", true) or ""
  part = part .. (util.get_macro("_forgeversionsuffix" .. i) or "")
end
\
-- Strip any leading '.'
part = part:gsub("^%.", "")
\
-- Print final version
if part ~= "" then
  print(baseversion .. sep .. part)
else
  print(baseversion)
end
}