"""Flask application factory for the Bluesky Collector web UI."""

from __future__ import annotations

import os

from flask import Flask

from . import db as webdb
from .helpers import (
    bsky_post_url,
    encode_uri,
    format_dt,
    format_number,
    time_ago,
    truncate,
)


def create_app() -> Flask:
    app = Flask(
        __name__,
        template_folder="templates",
    )

    app.secret_key = os.environ.get("SECRET_KEY", "bluesky-collector-dev-key")

    app.config["DATABASE_URL"] = os.environ.get(
        "DATABASE_URL",
        "postgresql://bluesky:changeme@db:5432/bluesky",
    )

    # Initialize database pool
    webdb.init_pool(app.config["DATABASE_URL"])

    # Register Jinja2 globals/filters
    app.jinja_env.filters["format_dt"] = format_dt
    app.jinja_env.filters["time_ago"] = time_ago
    app.jinja_env.filters["truncate_text"] = truncate
    app.jinja_env.filters["format_number"] = format_number
    app.jinja_env.globals["encode_uri"] = encode_uri
    app.jinja_env.globals["bsky_post_url"] = bsky_post_url

    # Register blueprints
    from .routes.dashboard import bp as dashboard_bp
    from .routes.accounts import bp as accounts_bp
    from .routes.statuses import bp as statuses_bp
    from .routes.mentions import bp as mentions_bp
    from .routes.export import bp as export_bp
    from .routes.analysis import bp as analysis_bp

    app.register_blueprint(dashboard_bp)
    app.register_blueprint(accounts_bp)
    app.register_blueprint(statuses_bp)
    app.register_blueprint(mentions_bp)
    app.register_blueprint(export_bp)
    app.register_blueprint(analysis_bp)

    # Teardown
    @app.teardown_appcontext
    def close_db(exc):
        pass  # Pool is long-lived, closed at shutdown

    import atexit
    atexit.register(webdb.close_pool)

    return app