package gtest

import (
  "log"
  "golang.flu0r1ne.net/planr"
  "strings"
  "github.com/BurntSushi/toml"
)

type GtestDefaults struct {
  Name      *string
  Suite     *string
  Testfile  *string
  Test_root *string
  Srcs      *[]string
  Srcs_root *string
}

func (child *GtestDefaults) Inherit(p interface{}) {
  parent := p.(*GtestDefaults)

  if(child.Name == nil)      { child.Name = parent.Name }
  if(child.Suite == nil)     { child.Suite = parent.Suite }
  if(child.Testfile == nil)  { child.Testfile = parent.Testfile }
  if(child.Test_root == nil) { child.Test_root = parent.Test_root }
  if(child.Srcs == nil)      { child.Srcs = parent.Srcs }
  if(child.Srcs_root == nil) { child.Srcs_root = parent.Srcs_root }
}


type GtestConfig struct {
  GtestDefaults
}

func (g GtestConfig) ensureSatisfied(path string) {
  if g.Name == nil {
    log.Fatalf("\"name\" is not defined for unit: %s\n", path)
  } else if g.Suite == nil {
    log.Fatalf("\"suite\" is not defined for unit: %s\n", path)
  } else if g.Testfile == nil {
    log.Fatalf("\"testfile\" is not defined for unit: %s\n", path)
  }
}

func (cfg GtestConfig) joinTests(path_ string) string {
  if cfg.Test_root == nil {
    return planr.JoinConfigDir("tests", path_)
  }
   
  return planr.JoinConfigDir(*cfg.Test_root, path_)
}

func (cfg GtestConfig) joinSrcs(path_ string) string {
  if cfg.Srcs_root == nil {
    return planr.JoinConfigDir("../src", path_)
  }

  return planr.JoinConfigDir(*cfg.Srcs_root, path_)
}

func (cfg GtestConfig) srcList() string {
  var srcList string

  if cfg.Srcs != nil {
    srcs := make([]string, len(*cfg.Srcs))
    for i, src := range *cfg.Srcs {
      srcs[i] = cfg.joinSrcs(src)
    }
    
    srcList = strings.Join(srcs, "\n  ")
  }

  return srcList
}

func primitiveDecode(primitive toml.Primitive, config interface{}) {
  if err := toml.PrimitiveDecode(primitive, config); err != nil {
    log.Fatal(err)
  }
}

func ParseConfig(prim toml.Primitive) planr.InheritableConfig {
    config := GtestConfig{}

    primitiveDecode(prim, &config)

    return &config
}

func ParseDefaultConfig(prim toml.Primitive) planr.InheritableConfig {
    config := GtestDefaults{}

    primitiveDecode(prim, &config)

    return &config
}