#!/usr/bin/env python3
"""Start a project again: close its pages, remove its worktrees, keep its work.

    bin/project-reset <folder> --dry-run
    bin/project-reset <folder> --yes
    bin/project-reset <folder> --yes --delete-folder

What it removes, and nothing else:

  - the project's screen panes in its TUIOS session (the shell pane stays, so
    the session survives)
  - the git worktrees Paperclip made for the project's tasks, and the branches
    those tasks were on

What it leaves alone: the folder, its `.harness`, its git history, and every
Paperclip record — tasks, comments, runs, cost. Paperclip owns those, so a reset
here cannot erase the history of what happened; it only clears the machinery.

`--delete-folder` is the only destructive option and it asks for the folder name
to be typed. Without it, nothing outside git and TUIOS is touched.
"""

import os
import sys

HERE = os.path.dirname(os.path.abspath(__file__))
sys.path.insert(0, os.path.join(HERE, "lib"))
import harness as h  # noqa: E402
import tuios  # noqa: E402
import project as pj  # noqa: E402

PAGES = ["tree", "reply", "log", "new"]


def main():
    argv = sys.argv[1:]
    args = [a for a in argv if not a.startswith("--")]
    if not args:
        h.say("usage: bin/project-reset <folder> [--dry-run] [--yes] [--delete-folder]")
        return 2
    folder = os.path.abspath(os.path.expanduser(args[0]))
    dry = "--dry-run" in argv
    yes = "--yes" in argv
    delete_folder = "--delete-folder" in argv

    cfg = pj.load(folder)
    pj.check_machine(cfg)
    session = cfg["session"]
    project_id = cfg["paperclip"]["project"]

    tasks = pj.active_tasks(project_id)
    worktrees = []
    for t in tasks:
        full = h.api("GET", "/api/issues/%s" % t["id"])
        ws = full.get("currentExecutionWorkspace") or {}
        if ws.get("cwd"):
            worktrees.append((t["identifier"], ws["cwd"], ws.get("branchName") or ""))

    h.say("project: %s" % project_id)
    h.say("folder:  %s" % folder)
    h.say("session: %s" % session)
    h.say("")
    h.say("would remove:")
    h.say("  panes:      %s in %s" % (", ".join(PAGES), session))
    for ref, cwd, branch in worktrees:
        h.say("  worktree:   %s  (%s, branch %s)" % (cwd, ref, branch or "none"))
    if delete_folder:
        h.say("  the folder: %s  (including .harness and git history)" % folder)
    h.say("kept: the Paperclip project, its tasks, comments, runs and cost")

    if dry:
        h.say("")
        h.say("dry run: nothing was removed")
        return 0

    if not yes:
        h.say("")
        h.say("Type the folder name to continue: %s" % os.path.basename(folder))
        typed = input("> ").strip()
        if typed != os.path.basename(folder):
            h.say("nothing was removed")
            return 1

    for name in PAGES:
        if tuios.close_pane(name, session):
            h.say("closed pane %s" % name)

    repo = folder
    for ref, cwd, branch in worktrees:
        code, out = h.run(["git", "-C", repo, "worktree", "remove", "--force", cwd])
        h.say("worktree %s: %s" % (ref, "removed" if code == 0 else out.strip()[:120]))
        if branch:
            code, out = h.run(["git", "-C", repo, "branch", "-D", branch])
            h.say("branch %s: %s" % (branch, "deleted" if code == 0 else out.strip()[:120]))

    if delete_folder:
        h.say("")
        h.say("Type the folder name again to delete %s: " % folder)
        typed = input("> ").strip()
        if typed != os.path.basename(folder):
            h.say("folder kept")
            return 0
        code, out = h.run(["rm", "-rf", folder])
        h.say("folder %s" % ("deleted" if code == 0 else "not deleted: " + out.strip()))
    return 0


if __name__ == "__main__":
    h.main_guard(main)