#!/usr/bin/env bats
# Tests for skills/git-manager/scripts/git_cmd.sh + _lib.sh.

load '../helpers/common'

setup() {
  sandbox_home
  SCRIPT="$REPO_ROOT/skills/git-manager/scripts/git_cmd.sh"
  CONFIG_FILE="$HOME/.agent-skills/git-manager/config.json"
  REPO="$BATS_TEST_TMPDIR/repo"
  make_test_repo "$REPO"
}

# --- subcommand allowlist ---

@test "allowed subcommand (status) runs and returns real git output" {
  write_git_manager_config "$CONFIG_FILE" "myrepo=$REPO"
  run "$SCRIPT" status --repo myrepo
  [ "$status" -eq 0 ]
  [[ "$output" == *"nothing to commit"* ]]
}

@test "disallowed subcommand (stash) is rejected before git ever runs" {
  write_git_manager_config "$CONFIG_FILE" "myrepo=$REPO"
  run "$SCRIPT" stash --repo myrepo
  [ "$status" -eq 1 ]
  [[ "$output" == *"is not allowed"* ]]
}

@test "no subcommand at all prints usage and exits 1" {
  run "$SCRIPT"
  [ "$status" -eq 1 ]
  [[ "$output" == *"Usage:"* ]]
}

# --- repo resolution ---

@test "no config file at all errors" {
  run "$SCRIPT" status
  [ "$status" -eq 1 ]
  [[ "$output" == *"no configuration found"* ]]
}

@test "zero repos registered errors" {
  write_git_manager_config "$CONFIG_FILE"
  run "$SCRIPT" status
  [ "$status" -eq 1 ]
  [[ "$output" == *"no repos registered"* ]]
}

@test "exactly one repo registered auto-resolves without --repo" {
  write_git_manager_config "$CONFIG_FILE" "myrepo=$REPO"
  run "$SCRIPT" status
  [ "$status" -eq 0 ]
  [[ "$output" == *"$REPO"* ]]
}

@test "multiple repos registered without --repo errors and lists names" {
  REPO2="$BATS_TEST_TMPDIR/repo2"
  make_test_repo "$REPO2"
  write_git_manager_config "$CONFIG_FILE" "myrepo=$REPO" "other=$REPO2"
  run "$SCRIPT" status
  [ "$status" -eq 1 ]
  [[ "$output" == *"multiple repos configured"* ]]
  [[ "$output" == *"myrepo"* ]]
  [[ "$output" == *"other"* ]]
}

@test "--repo selects the named repo among several registered" {
  REPO2="$BATS_TEST_TMPDIR/repo2"
  make_test_repo "$REPO2"
  write_git_manager_config "$CONFIG_FILE" "myrepo=$REPO" "other=$REPO2"
  run "$SCRIPT" status --repo other
  [ "$status" -eq 0 ]
  [[ "$output" == *"$REPO2"* ]]
}

@test "unknown --repo name errors and lists registered names" {
  write_git_manager_config "$CONFIG_FILE" "myrepo=$REPO"
  run "$SCRIPT" status --repo doesnotexist
  [ "$status" -eq 1 ]
  [[ "$output" == *"no repo named 'doesnotexist'"* ]]
  [[ "$output" == *"myrepo"* ]]
}

# --- canonicalize_and_check_repo ---

@test "registered path that no longer exists errors" {
  write_git_manager_config "$CONFIG_FILE" "gone=$BATS_TEST_TMPDIR/does-not-exist"
  run "$SCRIPT" status --repo gone
  [ "$status" -eq 1 ]
  [[ "$output" == *"does not exist"* ]]
}

@test "registered path that isn't a git work tree errors" {
  PLAIN_DIR="$BATS_TEST_TMPDIR/not-a-repo"
  mkdir -p "$PLAIN_DIR"
  write_git_manager_config "$CONFIG_FILE" "plain=$PLAIN_DIR"
  run "$SCRIPT" status --repo plain
  [ "$status" -eq 1 ]
  [[ "$output" == *"not inside a git work tree"* ]]
}

@test "a registered path nested inside the repo still resolves to the toplevel" {
  mkdir -p "$REPO/subdir"
  write_git_manager_config "$CONFIG_FILE" "nested=$REPO/subdir"
  run "$SCRIPT" status --repo nested
  [ "$status" -eq 0 ]
  [[ "$output" == *"== Repo: $REPO =="* ]]
}

# --- -- passthrough ---

@test "args after -- reach git unmodified" {
  git -C "$REPO" -c user.email=test@test -c user.name=test \
    commit -q --allow-empty -m "second"
  git -C "$REPO" -c user.email=test@test -c user.name=test \
    commit -q --allow-empty -m "third"
  write_git_manager_config "$CONFIG_FILE" "myrepo=$REPO"
  run "$SCRIPT" log --repo myrepo -- --oneline -n2
  [ "$status" -eq 0 ]
  # 2 commit lines + the script's own "== Repo ==" / "== Running ==" banner lines
  commit_lines=$(printf '%s\n' "$output" | grep -c '^[0-9a-f]\{7,\} ')
  [ "$commit_lines" -eq 2 ]
}