import pytest
from pathlib import Path

from shell_history_search.parsers import HistoryEntry
from shell_history_search.parsers.bash import BashHistoryParser
from shell_history_search.parsers.zsh import ZshHistoryParser
from shell_history_search.parsers.fish import FishHistoryParser
from shell_history_search.parsers.factory import get_parser, get_all_parsers


class TestBashHistoryParser:
    def test_get_history_path(self, temp_home):
        parser = BashHistoryParser()
        assert parser.get_history_path() == temp_home / ".bash_history"

    def test_parse_history(self, sample_bash_history, temp_home):
        parser = BashHistoryParser()
        entries = list(parser.parse(sample_bash_history))

        assert len(entries) == 7
        assert all(e.shell_type == "bash" for e in entries)

        commands = [e.command for e in entries]
        assert "git add ." in commands
        assert "docker build -t myapp ." in commands

        assert all(e.command_hash for e in entries)
        assert all(e.timestamp is None for e in entries)

    def test_parse_empty_file(self, temp_home):
        history_file = temp_home / ".bash_history"
        history_file.write_text("")

        parser = BashHistoryParser()
        entries = list(parser.parse(history_file))

        assert len(entries) == 0

    def test_parse_nonexistent_file(self, temp_home):
        parser = BashHistoryParser()
        entries = list(parser.parse(temp_home / ".bash_history"))
        assert len(entries) == 0


class TestZshHistoryParser:
    def test_get_history_path(self, temp_home):
        parser = ZshHistoryParser()
        assert parser.get_history_path() == temp_home / ".zsh_history"

    def test_parse_history(self, sample_zsh_history, temp_home):
        parser = ZshHistoryParser()
        entries = list(parser.parse(sample_zsh_history))

        assert len(entries) == 4
        assert all(e.shell_type == "zsh" for e in entries)

        commands = [e.command for e in entries]
        assert "git pull origin main" in commands
        assert "pytest tests/ -v" in commands

        timestamps = [e.timestamp for e in entries]
        assert all(ts is not None for ts in timestamps)
        assert timestamps[0] == 1700000000

    def test_parse_empty_file(self, temp_home):
        history_file = temp_home / ".zsh_history"
        history_file.write_text("")

        parser = ZshHistoryParser()
        entries = list(parser.parse(history_file))

        assert len(entries) == 0


class TestFishHistoryParser:
    def test_get_history_path(self, temp_home):
        parser = FishHistoryParser()
        expected = temp_home / ".local" / "share" / "fish" / "fish_history"
        assert parser.get_history_path() == expected

    def test_parse_history(self, sample_fish_history, temp_home):
        parser = FishHistoryParser()
        entries = list(parser.parse(sample_fish_history))

        assert len(entries) == 3
        assert all(e.shell_type == "fish" for e in entries)

        commands = [e.command for e in entries]
        assert "docker-compose up -d" in commands
        assert "cargo build --release" in commands

        timestamps = [e.timestamp for e in entries]
        assert all(ts is not None for ts in timestamps)

    def test_parse_empty_file(self, temp_home):
        history_file = temp_home / ".local" / "share" / "fish" / "fish_history"
        history_file.parent.mkdir(parents=True, exist_ok=True)
        history_file.write_text("")

        parser = FishHistoryParser()
        entries = list(parser.parse(history_file))

        assert len(entries) == 0


class TestParserFactory:
    def test_get_parser_bash(self):
        parser = get_parser("bash")
        assert isinstance(parser, BashHistoryParser)

    def test_get_parser_zsh(self):
        parser = get_parser("zsh")
        assert isinstance(parser, ZshHistoryParser)

    def test_get_parser_fish(self):
        parser = get_parser("fish")
        assert isinstance(parser, FishHistoryParser)

    def test_get_parser_case_insensitive(self):
        parser = get_parser("BASH")
        assert isinstance(parser, BashHistoryParser)

    def test_get_parser_invalid(self):
        with pytest.raises(ValueError, match="Unknown shell type"):
            get_parser("csh")

    def test_get_all_parsers(self):
        parsers = get_all_parsers()
        assert len(parsers) == 3
        assert isinstance(parsers[0], BashHistoryParser)
        assert isinstance(parsers[1], ZshHistoryParser)
        assert isinstance(parsers[2], FishHistoryParser)


class TestHistoryEntry:
    def test_create_hash(self):
        hash1 = HistoryEntry.create_hash("git add .")
        hash2 = HistoryEntry.create_hash("git add .")
        hash3 = HistoryEntry.create_hash("git commit")

        assert hash1 == hash2
        assert hash1 != hash3
        assert len(hash1) == 16