SyntaxTreeGenerator/app.py at main · heimdall3010/SyntaxTreeGenerator · GitHub

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import os

from flask import Flask, render_template, send_from_directory, request

from syntax.syntax import generate_syntaxtree


# =============================================================================
# Flask App
# =============================================================================

app = Flask(__name__)


# =============================================================================
# Routes
# =============================================================================

@app.route("/health")
def health():
    return {"status": "ok"}, 200

@app.route("/favicon.ico")
def favicon():
    return send_from_directory(
        os.path.join(app.root_path, "static"),
        "favicon.ico",
        mimetype="image/vnd.microsoft.icon"
    )


@app.route("/")
def landing():
    return render_template("index.html")


@app.route("/syntax")
def syntax():
    return render_template("syntax.html")


@app.route("/parse-sentence")
def parse_sentence():
    """
    Generate a syntax tree from the submitted sentence and grammar options.

    Expected query parameters:
    - sentence
    - Grammar
    - GrammarOption
    - LangOption
    """

    sentence = request.args.get("sentence", "").strip()
    grammar_rules = request.args.get("Grammar", "").strip()
    option_grammar = request.args.get("GrammarOption", "").strip()
    option_lang = request.args.get("LangOption", "").strip()

    if not sentence:
        return render_template(
            "syntax.html",
            error="Bitte gib einen Satz ein."
        ), 400

    try:
        tree, notation, grammar = generate_syntaxtree(
            sentence,
            grammar_rules,
            option_grammar,
            option_lang
        )

        return render_template(
            "syntax.html",
            tree=tree,
            notation=notation,
            grammar=grammar
        )

    except Exception:
        app.logger.exception("Syntax tree generation failed")

        return render_template(
            "syntax.html",
            error="Beim Erstellen des Syntaxbaums ist ein Fehler aufgetreten."
        ), 500


# =============================================================================
# Local Deployment
# =============================================================================
# Use this block ONLY when you want to run the app locally with:
#
#   python app.py
#
# For production with Docker + Gunicorn, this block is NOT used.
# Gunicorn starts the app with:
#
#   gunicorn app:app
#
# To use local deployment, uncomment the block below.


# if __name__ == "__main__":
#     app.run(
#         host="0.0.0.0",
#         port=5000,
#         debug=False
#     )