package sidekick

import (
  "context"
  "os"
  "strings"
  "testing"
)

func TestSanitizeToolName(t *testing.T) {
  tests := []struct{ i, e string }{
    {"mcp/tool", "mcp_tool"},
    {"my.tool-name", "my_tool-name"},
    {"a space", "a_space"},
    {"already_safe", "already_safe"},
  }
  for _, tt := range tests {
    if a := SanitizeToolName(tt.i); a != tt.e {
      t.Errorf("expected %s, got %s", tt.e, a)
    }
  }
}

func TestBufferGate(t *testing.T) {
  var tfs []string
  threshold := 10
  s := "small"
  if o, _ := BufferGate(s, &tfs, threshold); o != s { t.Errorf("expected small") }
  l := strings.Repeat("A", threshold+1)
  o, err := BufferGate(l, &tfs, threshold)
  if err != nil { t.Fatalf("err: %v", err) }
  if !strings.Contains(o, "file '") { t.Errorf("no file pointer") }
  if len(tfs) != 1 { t.Fatalf("no temp file") }
  c, _ := os.ReadFile(tfs[0])
  if string(c) != l { t.Errorf("content mismatch") }
  os.Remove(tfs[0])
}

func TestJSONActionParsing(t *testing.T) {
  a := &Sidekick{}
  m := Message{Content: `{"action": "RESPOND", "params": {"response": "Hi"}}`}
  act, p, ok, err := a.parseAction(m)
  if err != nil || !ok || act != ActionTypeRespond { t.Errorf("parse fail") }
  if p["response"] != "Hi" { t.Errorf("param mismatch") }
}

func TestDualResponseMode(t *testing.T) {
  a := &Sidekick{}
  m := Message{ToolCalls: []ToolCall{{Function: FunctionCall{Name: "rf", Arguments: "{}"}}}}
  act, _, ok, _ := a.parseAction(m)
  if !ok || act != ActionTypeToolCall { t.Errorf("dual fail") }
}

func TestSingleAgentLoop(t *testing.T) {
  c := AgentConfig{ID: "a1", Role: RoleSpecialist, MaxIterations: 5}
  a := NewSidekick(c, ModelConfig{}, nil)
  mc := &mockLLMClient{responses: []Message{
    {Content: `{"action": "TOOL_CALL", "params": {"tool_name": "unknown", "arguments": {}}}`},
    {Content: `{"action": "RESPOND", "params": {"response": "Done"}}`},
  }}
  SetLLMClient(mc)
  ans, _ := a.Run(context.Background(), nil, nil)
  if ans != "Done" { t.Errorf("expected Done, got %s", ans) }
}

func TestDelegation(t *testing.T) {
  sc := AgentConfig{ID: "s1", Role: RoleSpecialist, MaxIterations: 2}
  sa := NewSidekick(sc, ModelConfig{}, nil)
  cc := AgentConfig{ID: "c1", Role: RoleCoordinator, Subagents: []string{"s1"}, MaxIterations: 3}
  coord := NewSidekick(cc, ModelConfig{}, nil)
  mc := &mockLLMClient{responses: []Message{
    {Content: `{"action": "DELEGATE", "params": {"subagent_id": "s1", "task": "do"}}`},
    {Content: `{"action": "RESPOND", "params": {"response": "Sub done"}}`},
    {Content: `{"action": "RESPOND", "params": {"response": "Coord done"}}`},
  }}
  SetLLMClient(mc)
  p := map[string]*Sidekick{"s1": sa}
  ans, _ := coord.Run(context.Background(), nil, p)
  if ans != "Coord done" { t.Errorf("expected Coord done, got %s", ans) }
}

func TestTempFileCleanup(t *testing.T) {
  threshold := 10
  a := NewSidekick(AgentConfig{MaxIterations: 2, ToolResponseThreshold: threshold}, ModelConfig{}, nil)
  h := strings.Repeat("B", threshold+1)
  a.ToolRegistry["huge"] = ToolDefinition{Name: "huge", Internal: true, Handler: func(m map[string]interface{}) (string, error) {
    return h, nil
  }}
  a.ToolMapping["huge"] = "huge"
  mc := &mockLLMClient{responses: []Message{
    {Content: `{"action": "TOOL_CALL", "params": {"tool_name": "huge", "arguments": {}}}`},
    {Content: `{"action": "RESPOND", "params": {"response": "Ok"}}`},
  }}
  SetLLMClient(mc)
  bfs, _ := os.ReadDir(os.TempDir())
  a.Run(context.Background(), nil, nil)
  afs, _ := os.ReadDir(os.TempDir())
  bc, ac := 0, 0
  for _, f := range bfs { if strings.HasPrefix(f.Name(), "sidekick-buf-") { bc++ } }
  for _, f := range afs { if strings.HasPrefix(f.Name(), "sidekick-buf-") { ac++ } }
  if ac > bc { t.Errorf("leak: before %d, after %d", bc, ac) }
}