"""Tests for agents/bootstrap.py — tech detection, modules, decisions, obsidian."""

import json
import pytest
from pathlib import Path
from click.testing import CliRunner

from agents.bootstrap import (
    detect_tech_stack, detect_modules, extract_decisions_from_claude_md,
    find_vault_root, scan_obsidian, format_preview, save_to_db,
)
from core.db import init_db
from core import models
from cli.main import cli


# ---------------------------------------------------------------------------
# Tech stack detection
# ---------------------------------------------------------------------------

def test_detect_node_project(tmp_path):
    (tmp_path / "package.json").write_text(json.dumps({
        "dependencies": {"vue": "^3.4", "pinia": "^2.0"},
        "devDependencies": {"typescript": "^5.0", "vite": "^5.0"},
    }))
    (tmp_path / "tsconfig.json").write_text("{}")
    (tmp_path / "nuxt.config.ts").write_text("export default {}")

    stack = detect_tech_stack(tmp_path)
    assert "vue3" in stack
    assert "typescript" in stack
    assert "nuxt3" in stack
    assert "pinia" in stack
    assert "vite" in stack


def test_detect_python_project(tmp_path):
    (tmp_path / "requirements.txt").write_text("fastapi==0.104\npydantic>=2.0\n")
    (tmp_path / "pyproject.toml").write_text("[project]\nname='x'\n")

    stack = detect_tech_stack(tmp_path)
    assert "python" in stack
    assert "fastapi" in stack
    assert "pydantic" in stack


def test_detect_go_project(tmp_path):
    (tmp_path / "go.mod").write_text("module example.com/foo\nrequire gin-gonic v1.9\n")

    stack = detect_tech_stack(tmp_path)
    assert "go" in stack
    assert "gin" in stack


def test_detect_monorepo(tmp_path):
    fe = tmp_path / "frontend"
    fe.mkdir()
    (fe / "package.json").write_text(json.dumps({
        "dependencies": {"vue": "^3.0"},
    }))
    be = tmp_path / "backend"
    be.mkdir()
    (be / "requirements.txt").write_text("fastapi\n")

    stack = detect_tech_stack(tmp_path)
    assert "vue3" in stack
    assert "fastapi" in stack


def test_detect_empty_dir(tmp_path):
    assert detect_tech_stack(tmp_path) == []


# ---------------------------------------------------------------------------
# Module detection
# ---------------------------------------------------------------------------

def test_detect_modules_vue(tmp_path):
    src = tmp_path / "src"
    (src / "components" / "search").mkdir(parents=True)
    (src / "components" / "search" / "Search.vue").write_text("<template></template>")
    (src / "components" / "search" / "SearchFilter.vue").write_text("<template></template>")
    (src / "api" / "auth").mkdir(parents=True)
    (src / "api" / "auth" / "login.ts").write_text("import express from 'express';\nconst router = express.Router();")

    modules = detect_modules(tmp_path)
    names = {m["name"] for m in modules}
    assert "components" in names or "search" in names
    assert "api" in names or "auth" in names


def test_detect_modules_empty(tmp_path):
    assert detect_modules(tmp_path) == []


def test_detect_modules_backend_pg(tmp_path):
    """Test detection in backend-pg/src/ pattern (like vdolipoperek)."""
    src = tmp_path / "backend-pg" / "src" / "services"
    src.mkdir(parents=True)
    (src / "tourMapper.js").write_text("const express = require('express');")
    (src / "dbService.js").write_text("module.exports = { query };")

    modules = detect_modules(tmp_path)
    assert any(m["name"] == "services" for m in modules)


# ---------------------------------------------------------------------------
# Decisions from CLAUDE.md
# ---------------------------------------------------------------------------

def test_extract_decisions(tmp_path):
    (tmp_path / "CLAUDE.md").write_text("""# Project

## Rules
- Use WAL mode for SQLite

ВАЖНО: docker-compose v1 глючит → только raw docker commands
WORKAROUND: position:fixed breaks on iOS Safari, use transform instead
GOTCHA: Sletat API бан при параллельных запросах
FIXME: race condition in useSearch composable

## Known Issues
- Mobile bottom-sheet не работает в landscape mode
- CSS grid fallback для IE11 (но мы его не поддерживаем)
""")

    decisions = extract_decisions_from_claude_md(tmp_path)
    assert len(decisions) >= 4

    types = {d["type"] for d in decisions}
    assert "gotcha" in types
    assert "workaround" in types


def test_extract_decisions_no_claude_md(tmp_path):
    assert extract_decisions_from_claude_md(tmp_path) == []


# ---------------------------------------------------------------------------
# Obsidian vault
# ---------------------------------------------------------------------------

def test_scan_obsidian(tmp_path):
    # Create a mock vault
    vault = tmp_path / "vault"
    proj_dir = vault / "myproject"
    proj_dir.mkdir(parents=True)

    (proj_dir / "kanban.md").write_text("""---
kanban-plugin: board
---

## В работе
- [ ] Fix login page
- [ ] Add search filter
- [x] Setup CI/CD

## Done
- [x] Initial deploy

**ВАЖНО:** Не забыть обновить SSL сертификат
""")

    (proj_dir / "notes.md").write_text("""# Notes
GOTCHA: API rate limit is 10 req/s
- [ ] Write tests for auth module
""")

    result = scan_obsidian(vault, "myproject", "My Project", "myproject")
    assert result["files_scanned"] == 2
    assert len(result["tasks"]) >= 4  # 3 pending + at least 1 done
    assert len(result["decisions"]) >= 1  # At least the ВАЖНО one

    pending = [t for t in result["tasks"] if not t["done"]]
    done = [t for t in result["tasks"] if t["done"]]
    assert len(pending) >= 3
    assert len(done) >= 1


def test_scan_obsidian_no_match(tmp_path):
    vault = tmp_path / "vault"
    vault.mkdir()
    (vault / "other.md").write_text("# Unrelated note\nSomething else.")

    result = scan_obsidian(vault, "myproject", "My Project")
    assert result["files_scanned"] == 0
    assert result["tasks"] == []


def test_find_vault_root_explicit(tmp_path):
    vault = tmp_path / "vault"
    vault.mkdir()
    assert find_vault_root(vault) == vault


def test_find_vault_root_none():
    assert find_vault_root(Path("/nonexistent/path")) is None


# ---------------------------------------------------------------------------
# Save to DB
# ---------------------------------------------------------------------------

def test_save_to_db(tmp_path):
    conn = init_db(":memory:")

    save_to_db(
        conn,
        project_id="test",
        name="Test Project",
        path=str(tmp_path),
        tech_stack=["python", "fastapi"],
        modules=[
            {"name": "api", "type": "backend", "path": "src/api/", "file_count": 5},
            {"name": "ui", "type": "frontend", "path": "src/ui/", "file_count": 8},
        ],
        decisions=[
            {"type": "gotcha", "title": "Bug X", "description": "desc",
             "category": "ui"},
        ],
        obsidian={
            "tasks": [
                {"title": "Fix login", "done": False, "source": "kanban"},
                {"title": "Setup CI", "done": True, "source": "kanban"},
            ],
            "decisions": [
                {"type": "gotcha", "title": "API limit", "description": "10 req/s",
                 "category": "api", "source": "notes"},
            ],
            "files_scanned": 2,
        },
    )

    p = models.get_project(conn, "test")
    assert p is not None
    assert p["tech_stack"] == ["python", "fastapi"]

    mods = models.get_modules(conn, "test")
    assert len(mods) == 2

    decs = models.get_decisions(conn, "test")
    assert len(decs) == 2  # 1 from CLAUDE.md + 1 from Obsidian

    tasks = models.list_tasks(conn, project_id="test")
    assert len(tasks) == 2  # 2 from Obsidian
    assert any(t["status"] == "done" for t in tasks)
    assert any(t["status"] == "pending" for t in tasks)

    conn.close()


# ---------------------------------------------------------------------------
# format_preview
# ---------------------------------------------------------------------------

def test_format_preview():
    text = format_preview(
        "vdol", "ВДОЛЬ", "~/projects/vdol",
        ["vue3", "typescript"],
        [{"name": "search", "type": "frontend", "path": "src/search/", "file_count": 4}],
        [{"type": "gotcha", "title": "Safari bug"}],
        {"files_scanned": 3, "tasks": [
            {"title": "Fix X", "done": False, "source": "kb"},
        ], "decisions": []},
    )
    assert "vue3" in text
    assert "search" in text
    assert "Safari bug" in text
    assert "Fix X" in text


# ---------------------------------------------------------------------------
# CLI integration
# ---------------------------------------------------------------------------

def test_cli_bootstrap(tmp_path):
    # Create a minimal project to bootstrap
    proj = tmp_path / "myproj"
    proj.mkdir()
    (proj / "package.json").write_text(json.dumps({
        "dependencies": {"vue": "^3.0"},
    }))
    src = proj / "src" / "components"
    src.mkdir(parents=True)
    (src / "App.vue").write_text("<template></template>")

    db_path = tmp_path / "test.db"
    runner = CliRunner()
    result = runner.invoke(cli, [
        "--db", str(db_path),
        "bootstrap", str(proj),
        "--id", "myproj",
        "--name", "My Project",
        "--vault", str(tmp_path / "nonexistent_vault"),
        "-y",
    ])
    assert result.exit_code == 0
    assert "vue3" in result.output
    assert "Saved:" in result.output

    # Verify in DB
    conn = init_db(db_path)
    p = models.get_project(conn, "myproj")
    assert p is not None
    assert "vue3" in p["tech_stack"]
    conn.close()


def test_cli_bootstrap_already_exists(tmp_path):
    proj = tmp_path / "myproj"
    proj.mkdir()

    db_path = tmp_path / "test.db"
    runner = CliRunner()
    # Create project first
    runner.invoke(cli, ["--db", str(db_path), "project", "add", "myproj", "X", str(proj)])
    # Try bootstrap — should fail
    result = runner.invoke(cli, [
        "--db", str(db_path),
        "bootstrap", str(proj),
        "--id", "myproj", "--name", "X", "-y",
    ])
    assert result.exit_code == 1
    assert "already exists" in result.output