package cmd

import (
	"strings"
	"testing"
)

func TestBuildHistoryMessages(t *testing.T) {
	tests := []struct {
		name     string
		log      string
		sysCheck string
		usrCheck string
	}{
		{
			name:     "with recent commits",
			log:      "abc1234 feat: add new feature\ndef5678 fix: resolve bug",
			sysCheck: "git history",
			usrCheck: "abc1234 feat: add new feature",
		},
		{
			name:     "empty log",
			log:      "",
			sysCheck: "git history",
			usrCheck: "",
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			msgs := buildHistoryMessages(tt.log)

			if len(msgs) != 2 {
				t.Fatalf("expected 2 messages, got %d", len(msgs))
			}
			if msgs[0]["role"] != "system" {
				t.Errorf("first message role = %q, want %q", msgs[0]["role"], "system")
			}
			if msgs[1]["role"] != "user" {
				t.Errorf("second message role = %q, want %q", msgs[1]["role"], "user")
			}
			if !strings.Contains(strings.ToLower(msgs[0]["content"]), strings.ToLower(tt.sysCheck)) {
				t.Errorf("system prompt missing %q; got: %s", tt.sysCheck, msgs[0]["content"])
			}
			if tt.usrCheck != "" && !strings.Contains(msgs[1]["content"], tt.usrCheck) {
				t.Errorf("user content missing %q", tt.usrCheck)
			}
			if msgs[1]["content"] != tt.log {
				t.Errorf("user content = %q, want %q", msgs[1]["content"], tt.log)
			}
		})
	}
}