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path: root/screens/sessions.py
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import sqlite3

import models
import ui


def _load_from_template(conn: sqlite3.Connection, entries: list[dict]) -> None:
    """Offer to pre-fill session exercises from a template."""
    templates = models.list_workout_templates(conn)
    if not templates:
        return
    print("\nStart from a template?")
    for i, t in enumerate(templates, 1):
        print(f"  {i}. {t['name']}")
    print("  0. No template (blank session)")
    choice = input("\n> ").strip()
    try:
        idx = int(choice)
        if 1 <= idx <= len(templates):
            template_id = templates[idx - 1]["id"]
            _, tmpl_entries = models.get_workout_template_detail(conn, template_id)
            print(f'\nUsing template "{templates[idx - 1]["name"]}"')
            print("Press Enter to accept defaults, or type new values.\n")
            for te in tmpl_entries:
                print(f"  -- {te['exercise_name']} --")
                sets = ui.prompt_int(
                    f"  Sets [{te['sets'] or ''}]: ",
                    min_val=1,
                    default=te["sets"],
                )
                assert sets is not None
                reps, weight, rest_time = ui.prompt_sets_detail(
                    sets,
                    default_reps=te["reps"],
                    default_rest=te["rest_time"],
                    bw_relative=bool(te["bw_relative"]),
                )
                lsrpe = ui.prompt_int("  Last Set RPE: ", min_val=1, max_val=10)
                note = ui.prompt_str(
                    f"  Note [{te['note'] or ''}]: ",
                    required=False,
                    default=te["note"],
                )
                entries.append(
                    {
                        "exercise_id": te["exercise_id"],
                        "exercise_name": te["exercise_name"],
                        "bw_relative": bool(te["bw_relative"]),
                        "sets": sets,
                        "reps": reps,
                        "weight": weight,
                        "rest_time": rest_time,
                        "lsrpe": lsrpe,
                        "note": note,
                    }
                )
                print(f'  "{te["exercise_name"]}" added to session.')
    except (ValueError, IndexError):
        pass  # Invalid input or 0 — proceed without template


def _prompt_exercises(
    conn: sqlite3.Connection,
    exercises: list[sqlite3.Row],
    entries: list[dict],
) -> bool:
    """Prompt user to add exercises manually. Returns False if aborted."""
    while True:
        print("\nAvailable exercises:")
        for e in exercises:
            print(f"  {e['id']}. {e['name']}")
        print()
        choice = input("Select exercise ID ('d' = done): ").strip()

        if choice.lower() == "d":
            if not entries:
                print("No exercises added. Aborting.")
                return False
            return True

        try:
            eid = int(choice)
        except ValueError:
            print("Invalid input.")
            continue
        ex = models.get_workout_exercise(conn, eid)
        if not ex:
            print("Exercise not found.")
            continue

        print(f"\n  -- {ex['name']} --")
        sets = ui.prompt_int("  Sets: ", min_val=1)
        assert sets is not None
        reps, weight, rest_time = ui.prompt_sets_detail(
            sets, bw_relative=bool(ex["bw_relative"])
        )
        lsrpe = ui.prompt_int("  Last Set RPE: ", min_val=1, max_val=10)
        note = ui.prompt_str("  Note (optional): ", required=False)

        entries.append(
            {
                "exercise_id": eid,
                "exercise_name": ex["name"],
                "bw_relative": bool(ex["bw_relative"]),
                "sets": sets,
                "reps": reps,
                "weight": weight,
                "rest_time": rest_time,
                "lsrpe": lsrpe,
                "note": note,
            }
        )
        print(f'  "{ex["name"]}" added to session.')


def _confirm_and_save(
    conn: sqlite3.Connection,
    date_time: str,
    session_note: str | None,
    entries: list[dict],
) -> None:
    """Show session summary with option to reorder, then save or cancel."""
    while True:
        ui.clear_screen()
        ui.print_header("Session Summary")
        print(f"Date: {date_time}")
        if session_note:
            print(f"Note: {session_note}")
        ui.print_table(
            ["#", "Exercise", "Sets", "Reps", "Weight", "Rest", "LSRPE", "Note"],
            [
                [
                    str(i),
                    e["exercise_name"],
                    str(e["sets"]),
                    str(e["reps"]).replace(",", "/"),
                    ui.format_weight(e["weight"], e["bw_relative"]),
                    ui.format_rest_time(e["rest_time"]),
                    str(e["lsrpe"]),
                    e["note"] or "",
                ]
                for i, e in enumerate(entries, 1)
            ],
        )

        action = input("\nActions: (s)ave, (m)ove, (c)ancel\n> ").strip().lower()

        if action == "s":
            models.save_workout_session(conn, date_time, session_note, entries)
            print("Session saved!")
            ui.pause()
            return

        elif action == "m":
            if len(entries) < 2:
                print("Need at least 2 exercises to move.")
                ui.pause()
                continue
            from_pos = ui.prompt_int(
                "Move exercise #: ", min_val=1, max_val=len(entries)
            )
            to_pos = ui.prompt_int(
                "Move to position #: ", min_val=1, max_val=len(entries)
            )
            assert from_pos is not None and to_pos is not None
            item = entries.pop(from_pos - 1)
            entries.insert(to_pos - 1, item)

        elif action == "c":
            print("Session discarded.")
            ui.pause()
            return


def log_workout(conn: sqlite3.Connection) -> None:
    exercises = models.list_workout_exercises(conn)
    if not exercises:
        print("No exercises defined. Add some first via Manage Workout Exercises.")
        return

    ui.clear_screen()
    ui.print_header("Log Workout")
    print("(You can reorder exercises before saving.)\n")
    date_time = ui.prompt_datetime("Date/Time")
    session_note = ui.prompt_str("Session note (optional): ", required=False)

    entries: list[dict] = []
    _load_from_template(conn, entries)
    if not _prompt_exercises(conn, exercises, entries):
        return
    _confirm_and_save(conn, date_time, session_note, entries)


def _view_session_detail(conn: sqlite3.Connection, session_id: int) -> None:
    """Display a single session's exercises and handle deletion."""
    ui.clear_screen()
    session, entries = models.get_workout_session_detail(conn, session_id)
    assert session is not None
    ui.print_header(f"Session: {session['date_time']}")
    if session["note"]:
        print(f"Note: {session['note']}\n")
    ui.print_table(
        ["#", "Exercise", "Sets", "Reps", "Weight", "Rest", "LSRPE", "Note"],
        [
            [
                str(e["position"]),
                e["exercise_name"],
                str(e["sets"]),
                str(e["reps"]).replace(",", "/"),
                ui.format_weight(str(e["weight"]), bool(e["bw_relative"])),
                ui.format_rest_time(e["rest_time"]),
                str(e["lsrpe"]),
                e["note"] or "",
            ]
            for e in entries
        ],
    )
    action = input("\nActions: (b)ack, (d)elete session\n> ").strip().lower()
    if action == "d":
        if ui.confirm("Delete this session?"):
            models.delete_workout_session(conn, session_id)
            print("Session deleted.")
            ui.pause()


def view_workout_sessions(conn: sqlite3.Connection) -> None:
    while True:
        ui.clear_screen()
        sessions = models.list_workout_sessions(conn)
        if not sessions:
            print("\nNo sessions recorded yet.")
            return
        ui.print_header("Past Workout Sessions")
        ui.print_table(
            ["#", "Date", "Exercises", "Note"],
            [
                [str(i), s["date_time"], s["exercises"] or "", s["note"] or ""]
                for i, s in enumerate(sessions, 1)
            ],
        )

        choice = input("\nSelect # for details ('b' = back): ").strip()
        if choice.lower() == "b":
            break
        try:
            idx = int(choice) - 1
            if idx < 0 or idx >= len(sessions):
                print("Invalid selection.")
                continue
        except ValueError:
            print("Invalid input.")
            continue

        _view_session_detail(conn, sessions[idx]["id"])