package gtest

import (
	"log"
	"os"
	"path"
        "os/exec"
	"golang.flu0r1ne.net/planr"
)

const GTEST_CMAKE = "CMakeLists.txt"

func safeWd() string{
  wd, err := os.Getwd()

  if err != nil {
    log.Fatalf("Could not get GtestBuildDir %s %v\n", wd, err)
  }

  return wd
}

type Adapter struct {
  dirs     planr.DirConfig
  buildDir string
}

func (a *Adapter) Config() planr.AdapterConfig {
  return planr.AdapterConfig {
    Name: "gtest",
    ParseConfig: ParseConfig,
    ParseDefaultConfig: ParseDefaultConfig,
  }
}

func (a *Adapter) Init(ctx planr.PipelineContext) {
  a.dirs = ctx.Dirs
  a.buildDir = ctx.AdapterDir
}

func (adapter Adapter) Build(tcs []planr.TestCase) {
  finalizeConfigs(tcs)

  exes := createExecutables(tcs)

  cmakeFile := path.Join(adapter.buildDir, GTEST_CMAKE)
  cmakeUnits := cmakeUnits(exes, adapter.dirs)

  generateCmakeScript(cmakeFile, cmakeUnits)

  cmd := exec.Command("cmake", "-S", ".", "-B", ".")

  cmd.Dir = adapter.buildDir

  planr.Exec(cmd)

  cmd = exec.Command("make", "gtest", "gmock")
  
  cmd.Dir = adapter.buildDir

  planr.Exec(cmd)
}

func (adapter *Adapter) Evaluate(tcs []planr.TestCase) [] planr.TestResult {
  finalizeConfigs(tcs)
  
  results := make([]planr.TestResult, 0)
  
  exes := createExecutables(tcs)

  c := make(chan []planr.TestResult, len(exes))
  for i := range exes {
    go func(exe *executable) {
      succeed, buildFailures := exe.compile(adapter.buildDir)

      if ! succeed {
        c <- buildFailures
        return
      }

      runtimeResults := exe.execute(adapter.buildDir)

      c <- runtimeResults
    }(&exes[i])
  }

  for range exes {
    results = append(results, (<-c)...)
  }
 
  return results
}

func NewAdapter() *Adapter {
  return new(Adapter)
}