package planr

import "fmt"

type Runner struct {
  adapters    []Adapter
}

func (r *Runner) RegisterAdapter(a Adapter) {
  r.adapters = append(r.adapters, a)
}

func (r Runner) adapterCfgs() []AdapterConfig {
  cgs := make([]AdapterConfig, len(r.adapters))
  
  for _, adapter := range r.adapters {
    cgs = append(cgs, adapter.Config())
  }

  return cgs
}

type TcTab map[string] []*TestCase

func (r Runner) buildTcLUT(tcs []TestCase) TcTab {
  m := make(TcTab, 0)

  for i := range tcs {
    tc := &tcs[i]
    for nm := range tc.Config.adapters_ {
      m[nm] = append(m[nm], tc)
    }
  }

  return m 
}

func (r Runner) Build(tcs []TestCase) {
  tcTab := r.buildTcLUT(tcs)

  for _, adapter := range r.adapters {
    nm := adapter.Config().Name
  
    fmt.Printf("[R] Building adapter \"%s\"\n", nm)
    adapter.Build(tcTab[nm])
  }
}

func (r Runner) Evaluate(tcs []TestCase) []TestResult {
  tcTab := r.buildTcLUT(tcs)
  results := make([]TestResult, 0)
  
  for _, adapter := range r.adapters {
    nm := adapter.Config().Name

    fmt.Printf("[R] Evaluating adapter \"%s\"\n", nm)
    adapter.Evaluate(tcTab[nm])
  }

  return results
}


func (r Runner) Run(root string) [] TestResult {
  tcs := collectUnits(root, r.adapterCfgs())

  r.Build(tcs)
  trs := r.Evaluate(tcs)

  return trs
}