package engineeringdashboard

import (
	"context"
	"errors"
	"strings"
	"testing"
	"time"
)

func TestGit_AheadDoesNotClaimRemoteAvailable(t *testing.T) {
	now := time.Now().UTC()
	fake := &FakeRunner{Map: map[string]FakeResult{
		"git rev-parse --abbrev-ref HEAD": {Stdout: "dev\n"},
		"git rev-parse HEAD":              {Stdout: "abc123\n"},
		"git status --porcelain=v2 --branch": {Stdout: "# branch.head dev\n"},
		"git for-each-ref --format=%(refname:short)|%(objectname:short)|%(upstream:short) refs/heads": {
			Stdout: "dev|abc123|origin/dev\n",
		},
		"git rev-list --left-right --count origin/dev...dev": {Stdout: "0\t3\n"},
		"git worktree list --porcelain": {Stdout: "worktree /repo\nHEAD abc123\nbranch refs/heads/dev\n"},
	}}
	res := CollectGit(context.Background(), "/repo", fake, now)
	if res.Source.Status != SourceOK {
		t.Fatalf("git source: %+v", res.Source)
	}
	if len(res.Branches) != 1 || res.Branches[0].Ahead != 3 {
		t.Fatalf("expected ahead=3: %+v", res.Branches)
	}
	if !strings.Contains(res.Branches[0].RemoteNote, "not network-refreshed") {
		t.Fatalf("missing remote disclaimer: %+v", res.Branches[0])
	}
	fake.AssertNoForbidden(t)
}

func TestGit_WorktreeBranchMismatchSurfaced(t *testing.T) {
	now := time.Now().UTC()
	fake := &FakeRunner{Map: map[string]FakeResult{
		"git rev-parse --abbrev-ref HEAD": {Stdout: "feature/a\n"},
		"git rev-parse HEAD":              {Stdout: "def\n"},
		"git status --porcelain=v2 --branch": {Stdout: "1 .M N... file\n"},
		"git for-each-ref --format=%(refname:short)|%(objectname:short)|%(upstream:short) refs/heads": {
			Stdout: "feature/a|def|\nfeature/b|ghi|\n",
		},
		"git worktree list --porcelain": {
			Stdout: "worktree /repo\nHEAD def\nbranch refs/heads/feature/a\n\nworktree /repo-wt\nHEAD ghi\nbranch refs/heads/feature/b\n",
		},
	}}
	res := CollectGit(context.Background(), "/repo", fake, now)
	var foundB bool
	for _, b := range res.Branches {
		if b.Name == "feature/b" && b.Worktree == "/repo-wt" {
			foundB = true
		}
	}
	if !foundB {
		t.Fatalf("worktree mapping missing: %+v", res.Branches)
	}
	if !res.Repository.Dirty {
		t.Fatal("expected dirty")
	}
}

func TestGit_TimeoutDegradesSource(t *testing.T) {
	fake := &FakeRunner{Map: map[string]FakeResult{
		"git rev-parse --abbrev-ref HEAD": {Err: errors.New("command timed out: git")},
	}}
	res := CollectGit(context.Background(), "/repo", fake, time.Now().UTC())
	if res.Source.Status != SourceError {
		t.Fatalf("expected error source: %+v", res.Source)
	}
}

func TestGit_RunnerDeniesFetch(t *testing.T) {
	r := ExecRunner{}
	_, _, err := r.Run(context.Background(), "/tmp", "git", "fetch", "origin")
	if err == nil || !strings.Contains(err.Error(), "denied") {
		t.Fatalf("expected deny, got %v", err)
	}
}