"""Tests for core/context_builder.py — context assembly per role."""

import pytest
from core.db import init_db
from core import models
from core.context_builder import build_context, format_prompt


@pytest.fixture
def conn():
    c = init_db(":memory:")
    # Seed project, modules, decisions, tasks
    models.create_project(c, "vdol", "ВДОЛЬ и ПОПЕРЕК", "~/projects/vdolipoperek",
                          tech_stack=["vue3", "typescript", "nodejs"])
    models.add_module(c, "vdol", "search", "frontend", "src/search/")
    models.add_module(c, "vdol", "api", "backend", "src/api/")
    models.add_decision(c, "vdol", "gotcha", "Safari bug",
                        "position:fixed breaks", category="ui", tags=["ios"])
    models.add_decision(c, "vdol", "workaround", "API rate limit",
                        "10 req/s max", category="api")
    models.add_decision(c, "vdol", "convention", "Use WAL mode",
                        "Always use WAL for SQLite", category="architecture")
    models.add_decision(c, "vdol", "decision", "Auth required",
                        "All endpoints need auth", category="security")
    models.create_task(c, "VDOL-001", "vdol", "Fix search filters",
                       brief={"module": "search", "route_type": "debug"})
    models.create_task(c, "VDOL-002", "vdol", "Add payments",
                       status="in_progress")
    yield c
    c.close()


class TestBuildContext:
    def test_pm_gets_everything(self, conn):
        ctx = build_context(conn, "VDOL-001", "pm", "vdol")
        assert ctx["task"]["id"] == "VDOL-001"
        assert ctx["project"]["id"] == "vdol"
        assert len(ctx["modules"]) == 2
        assert len(ctx["decisions"]) == 4  # all decisions
        assert len(ctx["active_tasks"]) == 1  # VDOL-002 in_progress
        assert "pm" in ctx["available_specialists"]

    def test_architect_gets_all_decisions_and_modules(self, conn):
        ctx = build_context(conn, "VDOL-001", "architect", "vdol")
        assert len(ctx["modules"]) == 2
        assert len(ctx["decisions"]) == 4

    def test_debugger_gets_only_gotcha_workaround(self, conn):
        ctx = build_context(conn, "VDOL-001", "debugger", "vdol")
        types = {d["type"] for d in ctx["decisions"]}
        assert types <= {"gotcha", "workaround"}
        assert "convention" not in types
        assert "decision" not in types
        assert ctx["module_hint"] == "search"

    def test_frontend_dev_gets_gotcha_workaround_convention(self, conn):
        ctx = build_context(conn, "VDOL-001", "frontend_dev", "vdol")
        types = {d["type"] for d in ctx["decisions"]}
        assert "gotcha" in types
        assert "workaround" in types
        assert "convention" in types
        assert "decision" not in types  # plain decisions excluded

    def test_backend_dev_same_as_frontend(self, conn):
        ctx = build_context(conn, "VDOL-001", "backend_dev", "vdol")
        types = {d["type"] for d in ctx["decisions"]}
        assert types == {"gotcha", "workaround", "convention"}

    def test_reviewer_gets_only_conventions(self, conn):
        ctx = build_context(conn, "VDOL-001", "reviewer", "vdol")
        types = {d["type"] for d in ctx["decisions"]}
        assert types == {"convention"}

    def test_tester_gets_minimal_context(self, conn):
        ctx = build_context(conn, "VDOL-001", "tester", "vdol")
        assert ctx["task"] is not None
        assert ctx["project"] is not None
        assert "decisions" not in ctx
        assert "modules" not in ctx

    def test_security_gets_security_decisions(self, conn):
        ctx = build_context(conn, "VDOL-001", "security", "vdol")
        categories = {d.get("category") for d in ctx["decisions"]}
        assert categories == {"security"}

    def test_unknown_role_gets_fallback(self, conn):
        ctx = build_context(conn, "VDOL-001", "unknown_role", "vdol")
        assert "decisions" in ctx
        assert len(ctx["decisions"]) > 0


class TestFormatPrompt:
    def test_format_with_template(self, conn):
        ctx = build_context(conn, "VDOL-001", "debugger", "vdol")
        prompt = format_prompt(ctx, "debugger", "You are a debugger. Find bugs.")
        assert "You are a debugger" in prompt
        assert "VDOL-001" in prompt
        assert "Fix search filters" in prompt
        assert "vdol" in prompt
        assert "vue3" in prompt

    def test_format_includes_decisions(self, conn):
        ctx = build_context(conn, "VDOL-001", "debugger", "vdol")
        prompt = format_prompt(ctx, "debugger", "Debug this.")
        assert "Safari bug" in prompt
        assert "API rate limit" in prompt
        # Convention should NOT be here (debugger doesn't get it)
        assert "WAL mode" not in prompt

    def test_format_pm_includes_specialists(self, conn):
        ctx = build_context(conn, "VDOL-001", "pm", "vdol")
        prompt = format_prompt(ctx, "pm", "You are PM.")
        assert "Available specialists" in prompt
        assert "debugger" in prompt
        assert "Active tasks" in prompt
        assert "VDOL-002" in prompt

    def test_format_with_previous_output(self, conn):
        ctx = build_context(conn, "VDOL-001", "tester", "vdol")
        ctx["previous_output"] = "Found race condition in useSearch.ts"
        prompt = format_prompt(ctx, "tester", "Write tests.")
        assert "Previous step output" in prompt
        assert "race condition" in prompt

    def test_format_loads_prompt_file(self, conn):
        ctx = build_context(conn, "VDOL-001", "pm", "vdol")
        prompt = format_prompt(ctx, "pm")  # Should load from agents/prompts/pm.md
        assert "decompose" in prompt.lower() or "pipeline" in prompt.lower()

    def test_format_missing_prompt_file(self, conn):
        ctx = build_context(conn, "VDOL-001", "analyst", "vdol")
        prompt = format_prompt(ctx, "analyst")  # No analyst.md exists
        assert "analyst" in prompt.lower()