local test_env = require("spec.util.test_env")
local testing_paths = test_env.testing_paths

local cfg = require("luarocks.core.cfg")
local deps = require("luarocks.deps")
local fs = require("luarocks.fs")

describe("LuaRocks deps #unit", function()
   local runner

   lazy_setup(function()
      cfg.init()
      fs.init()
      deps.check_lua_incdir(cfg.variables)
      deps.check_lua_libdir(cfg.variables)

      runner = require("luacov.runner")
      runner.init(testing_paths.testrun_dir .. "/luacov.config")
   end)

   lazy_teardown(function()
      runner.save_stats()
   end)

   describe("deps", function()
      describe("deps.autodetect_external_dependencies", function()
         it("returns false if the given build table has no external dependencies", function()
            local build_table = {
               type = "builtin"
            }

            assert.falsy(deps.autodetect_external_dependencies(build_table))
         end)

         it("returns a table of the external dependencies found in the given build table", function()
            local build_table = {
               type = "builtin",
               modules = {
                  module1 = {
                     libraries = { "foo1", "foo2" },
                  },
                  module2 = {
                     libraries = "foo3"
                  },
               }
            }

            local extdeps = deps.autodetect_external_dependencies(build_table)
            assert.same(extdeps["FOO1"], { library = "foo1" })
            assert.same(extdeps["FOO2"], { library = "foo2" })
            assert.same(extdeps["FOO3"], { library = "foo3" })
         end)

         it("adds proper include and library dirs to the given build table", function()
            local build_table

            build_table = {
               type = "builtin",
               modules = {
                  module1 = {
                     libraries = "foo"
                  }
               }
            }
            deps.autodetect_external_dependencies(build_table)
            assert.same(build_table, {
               type = "builtin",
               modules = {
                  module1 = {
                     libraries = "foo",
                     incdirs = { "$(FOO_INCDIR)" },
                     libdirs = { "$(FOO_LIBDIR)" }
                  }
               }
            })

            build_table = {
               type = "builtin",
               modules = {
                  module1 = {
                     libraries = "foo",
                     incdirs = { "INCDIRS" }
                  }
               }
            }
            deps.autodetect_external_dependencies(build_table)
            assert.same(build_table, {
               type = "builtin",
               modules = {
                  module1 = {
                     libraries = "foo",
                     incdirs = { "INCDIRS" },
                     libdirs = { "$(FOO_LIBDIR)" }
                  }
               }
            })

            build_table = {
               type = "builtin",
               modules = {
                  module1 = {
                     libraries = "foo",
                     libdirs = { "LIBDIRS" }
                  }
               }
            }
            deps.autodetect_external_dependencies(build_table)
            assert.same(build_table, {
               type = "builtin",
               modules = {
                  module1 = {
                     libraries = "foo",
                     incdirs = { "$(FOO_INCDIR)" },
                     libdirs = { "LIBDIRS" }
                  }
               }
            })

            build_table = {
               type = "builtin",
               modules = {
                  module1 = {
                     libraries = "foo",
                     incdirs = { "INCDIRS" },
                     libdirs = { "LIBDIRS" }
                  }
               }
            }
            deps.autodetect_external_dependencies(build_table)
            assert.same(build_table, {
               type = "builtin",
               modules = {
                  module1 = {
                     libraries = "foo",
                     incdirs = { "INCDIRS" },
                     libdirs = { "LIBDIRS" }
                  }
               }
            })
         end)
      end)
   end)
end)