# Typoena firmware — common commands.
# Recipes source ~/export-esp.sh themselves (LIBCLANG_PATH + Xtensa GCC),
# so no per-shell setup is needed before calling just.

# Load firmware/.env (Wi-Fi creds for the network spikes) into recipe env.
# Absent .env is fine — the editor build ignores TW_* entirely.
set dotenv-load := true

esp_env := ". ~/export-esp.sh &&"
elf := "target/xtensa-esp32s3-espidf/release/firmware"
elf_wifi := "target/xtensa-esp32s3-espidf/release/wifi_tls"
elf_sd := "target/xtensa-esp32s3-espidf/release/sd_fat"
elf_splash := "target/xtensa-esp32s3-espidf/release/splash"
elf_git := "target/xtensa-esp32s3-espidf/release/git_smoke"
elf_git_push := "target/xtensa-esp32s3-espidf/release/git_push"
elf_git_sync := "target/xtensa-esp32s3-espidf/release/git_sync"

# Custom partition table (adds the `storage` FAT partition for the git working
# copy). Only the git-push flash applies it — the editor flash keeps the default
# single-app layout, so this change is scoped to Spike 7's finish.
partition_table := justfile_directory() + "/partitions.csv"

# Spike 7 Path 2 — env for the git2/libgit2 build. LIBGIT2_SRC points at the
# vendored libgit2 submodule (v1.9.4, matches libgit2-sys 0.18.5). pkgconfig/
# holds fake .pc files so libgit2-sys + libz-sys run in system mode and the
# symbols come from the esp-idf libgit2 component. Only the git recipes set this,
# so the editor build never compiles libgit2.
libgit2_src := justfile_directory() + "/components/libgit2/vendor"
git_env := "LIBGIT2_SRC=" + libgit2_src + " LIBGIT2_NO_VENDOR=1 PKG_CONFIG_ALLOW_CROSS=1 PKG_CONFIG_LIBDIR=" + justfile_directory() + "/pkgconfig"

# list recipes
default:
    @just --list

# compile (release) — the nominal product build: full firmware WITH git
# publishing (compiles libgit2 + mbedTLS, links git2). For fast iteration on the
# editor / EPD / USB / SD without paying for libgit2, use `build-light`.
build:
    {{esp_env}} {{git_env}} cargo build --release --bin firmware --features git

# build + flash + open serial monitor (full firmware, see `build`)
flash:
    {{esp_env}} {{git_env}} cargo run --release --bin firmware --features git

# LIGHT editor build — no git: no libgit2 component (LIBGIT2_SRC unset) and no
# git2 crate (`git` feature off), so it builds much faster. `:sync` saves locally
# and skips the push. Use for anything but exercising publish.
build-light:
    {{esp_env}} cargo build --release --bin firmware

# light build + flash + open serial monitor (see `build-light`)
flash-light:
    {{esp_env}} cargo run --release --bin firmware

# serial monitor only, with decoded backtraces
monitor:
    espflash monitor --elf {{elf}}

# Spike 6 — build the Wi-Fi + TLS spike (needs TW_WIFI_SSID / TW_WIFI_PASS in .env)
build-wifi:
    {{esp_env}} cargo build --release --bin wifi_tls

# Spike 6 — flash + monitor the Wi-Fi + TLS spike
flash-wifi:
    {{esp_env}} cargo run --release --bin wifi_tls

# serial monitor for the Wi-Fi spike, with decoded backtraces
monitor-wifi:
    espflash monitor --elf {{elf_wifi}}

# Spike 3 — build the SD/FAT spike (no .env needed)
build-sd:
    {{esp_env}} cargo build --release --bin sd_fat

# Spike 3 — flash + monitor the SD/FAT spike
flash-sd:
    {{esp_env}} cargo run --release --bin sd_fat

# serial monitor for the SD spike, with decoded backtraces
monitor-sd:
    espflash monitor --elf {{elf_sd}}

# Spike 9 — build the boot splash spike (no .env needed)
build-splash:
    {{esp_env}} cargo build --release --bin splash

# Spike 9 — flash + monitor the boot splash spike
flash-splash:
    {{esp_env}} cargo run --release --bin splash

# serial monitor for the splash spike, with decoded backtraces
monitor-splash:
    espflash monitor --elf {{elf_splash}}

# Spike 7 Path 2 — build the git2/libgit2 smoke (git2 safe API on device)
build-git:
    {{esp_env}} {{git_env}} cargo build --release --bin git_smoke --features git

# Spike 7 Path 2 — flash + monitor the git2/libgit2 smoke
flash-git:
    {{esp_env}} {{git_env}} cargo run --release --bin git_smoke --features git

# serial monitor for the git smoke, with decoded backtraces
monitor-git:
    espflash monitor --elf {{elf_git}}

# Spike 7 finish — build the on-device git push (Wi-Fi + SNTP + flash-FAT + libgit2)
build-git-push:
    {{esp_env}} {{git_env}} cargo build --release --bin git_push --features git

# Spike 7 finish — flash + monitor. espflash applies the custom partition table
# (so the `storage` FAT partition exists) and sets 16 MB flash. Uses espflash
# directly, not `cargo run`, so the table is applied only to this binary.
flash-git-push: build-git-push
    espflash flash --monitor --partition-table {{partition_table}} --flash-size 16mb {{elf_git_push}}

# serial monitor for the git push, with decoded backtraces
monitor-git-push:
    espflash monitor --elf {{elf_git_push}}

# Milestone #2A — build the persistent-clone publish cycle (clone + fast-forward push)
build-git-sync:
    {{esp_env}} {{git_env}} cargo build --release --bin git_sync --features git

# Milestone #2A — flash + monitor. Applies the same custom partition table as
# git-push (the `storage` FAT partition holds the persistent clone).
flash-git-sync: build-git-sync
    espflash flash --monitor --partition-table {{partition_table}} --flash-size 16mb {{elf_git_sync}}

# serial monitor for the git sync, with decoded backtraces
monitor-git-sync:
    espflash monitor --elf {{elf_git_sync}}

# detect board, print chip/MAC/flash size
info:
    espflash board-info

# list USB serial devices
ports:
    @ls /dev/cu.usb* 2>/dev/null || echo "no USB serial device found"

# ─── SD card provisioning ────────────────────────────────────────────────────
# Prepare an SD card on a computer so it can go straight into Typoena (the
# decision in docs/notes/git-sync-images-and-repo-size.md): the device never
# cold-clones 566 MB over Wi-Fi + mbedTLS; a laptop copies the clone onto the
# card via a reader, and the device only ever takes the `open` + fast-forward
# path. Three entry points, each ejecting the card when done:
#
#   just init ~/code/notes    # full prep of a fresh card: repo + config
#   just load ~/code/notes    # (re)copy just the notes repo → /sd/repo
#   just provision            # (re)write just the config (derive + prompt)
#
# Config (Wi-Fi + PAT + git identity) needs no firmware/.env: each value is
# resolved from firmware/.env if present, else derived from tools the machine
# already has (git config, gh, the active Wi-Fi network + its Keychain
# password), else asked for at an interactive prompt with the derived value as
# the default. The PAT is always typed by hand — never derived (a broad
# `gh auth token` on a plaintext card would defeat the scoped-token model).
#
# Add a /Volumes/<name> as the last arg if more than one card is mounted.
# The `_`-prefixed recipes are shared internals (hidden from `just --list`).
sd_repo_dir := "repo"

# Full prep of a fresh card: copy the notes repo + write config, then eject.
# Run this once per card. <repo-src> is a clone made on this computer.
init repo_src sd_volume="":
    #!/usr/bin/env bash
    set -euo pipefail
    vol="$(just _card "{{sd_volume}}" | tail -n1)"
    just _load-repo "{{repo_src}}" "$vol"
    just _write-conf "$vol" "{{repo_src}}"
    just _eject "$vol"

# (Re)copy just the notes repo to /sd/repo (full clone, gitignored paths
# excluded), then eject — e.g. to refresh the card after big upstream changes.
load repo_src sd_volume="":
    #!/usr/bin/env bash
    set -euo pipefail
    vol="$(just _card "{{sd_volume}}" | tail -n1)"
    just _load-repo "{{repo_src}}" "$vol"
    just _eject "$vol"

# (Re)write just the config (Wi-Fi + PAT + git identity), then eject — e.g. to
# rotate the PAT or switch networks without touching repo/. Values are derived +
# prompted (see the section header); firmware/.env is an optional override. With
# no repo arg, the git remote is derived from the card's existing clone.
provision sd_volume="":
    #!/usr/bin/env bash
    set -euo pipefail
    vol="$(just _card "{{sd_volume}}" | tail -n1)"
    just _write-conf "$vol"
    just _eject "$vol"

# Resolve the target card volume. Prints the /Volumes/<name> path as the last
# stdout line (callers capture it); all diagnostics go to stderr. Prefers an
# explicit name; else auto-detects exactly one removable/SD volume (covers cards
# in a built-in Mac reader, which report an "Internal" bus), and refuses on 0 or
# >1 — a wrong guess here means rsync --delete wipes the wrong disk's repo/.
_card sd_volume="":
    #!/usr/bin/env bash
    set -euo pipefail
    want="{{sd_volume}}"
    if [ -n "$want" ]; then
        vol="/Volumes/$want"
        [ -d "$vol" ] || { echo "error: '$vol' is not mounted" >&2; exit 1; }
    else
        cands=()
        for v in /Volumes/*; do
            [ -d "$v" ] || continue
            info="$(diskutil info "$v" 2>/dev/null || true)"
            # Treat a volume as a candidate card if ANY removable/SD signal is
            # present. A card in a Mac's *built-in* reader shows Protocol "Secure
            # Digital" + Removable Media "Removable", but sits on the "Internal"
            # bus with no whole-disk "Ejectable" line — so the old
            # "Ejectable: Yes AND external" test missed it entirely. None of these
            # match the fixed internal APFS disk; a spurious extra match just
            # trips the ">1 — name one" refusal below, which is safe.
            if echo "$info" | grep -qiE 'Protocol:[[:space:]]+Secure Digital' \
               || echo "$info" | grep -qiE 'Removable Media:[[:space:]]+(Removable|Yes)' \
               || echo "$info" | grep -qiE 'Ejectable:[[:space:]]+Yes' \
               || echo "$info" | grep -qiE 'Device Location:[[:space:]]+External'; then
                cands+=("$v")
            fi
        done
        case "${#cands[@]}" in
            0) echo "error: no removable card detected under /Volumes — insert an SD card (FAT32)" >&2; exit 1 ;;
            1) vol="${cands[0]}" ;;
            *) echo "error: multiple removable volumes — name one as the volume arg:" >&2
               printf '  %s\n' "${cands[@]#/Volumes/}" >&2; exit 1 ;;
        esac
    fi
    # The device won't mount a non-FAT card (esp_vfs_fat, format_if_mount_failed=false).
    fs="$(diskutil info "$vol" 2>/dev/null | grep -iE 'File System Personality' | sed 's/.*:[[:space:]]*//' || true)"
    case "$fs" in
        *FAT32*|*MS-DOS*) : ;;
        *) echo "warning: '$vol' is '$fs', not FAT32 — the device may fail to mount it" >&2 ;;
    esac
    echo "$vol"

# Copy a full clone of the notes repo to <vol>/repo. Everything the repo's
# .gitignore ignores is excluded (node_modules is 3.9 GB, gitignored, never in
# .git) — the device needs .git + the checkout (~720 MB), not the JS deps or
# secrets like firmware/.env. Copying (not a fresh `git clone` of the local
# path) preserves origin → GitHub so on-device fetch/push still work.
_load-repo repo_src vol:
    #!/usr/bin/env bash
    set -euo pipefail
    src="{{repo_src}}"; src="${src%/}"   # strip trailing slash
    [ -d "$src/.git" ] || { echo "error: '$src' is not a git repo (no .git/)"; exit 1; }

    origin="$(git -C "$src" remote get-url origin 2>/dev/null || true)"
    case "$origin" in
        https://*|git@*|ssh://*|git://*) echo "source origin: $origin" ;;
        "")  echo "warning: '$src' has no 'origin' remote — the device can't fetch/push after loading" ;;
        *)   echo "warning: origin is '$origin' (looks like a local path, not a remote) —"
             echo "         the device fetch/push will fail; set origin to the GitHub URL first" ;;
    esac
    if [ -n "${TW_REMOTE_URL:-}" ] && [ -n "$origin" ] && [ "$origin" != "${TW_REMOTE_URL}" ]; then
        echo "warning: origin ($origin) != TW_REMOTE_URL (${TW_REMOTE_URL})"
    fi

    dest="{{vol}}/{{sd_repo_dir}}"
    echo "copying repo: $src  ->  $dest"
    mkdir -p "$dest"

    # Build the exclude list from git's own ignore resolution (.gitignore +
    # .git/info/exclude + global). --directory collapses a fully-ignored dir
    # (node_modules/, 3.9 GB) to one line. Driving off git — not rsync's own
    # dir-merge — means we never list a tracked file or anything under .git/, so
    # a .gitignore pattern like `logs/` or `*.pack` can't corrupt the clone.
    ignore_list="$(mktemp)"
    trap 'rm -f "$ignore_list"' EXIT
    git -C "$src" -c core.quotePath=false ls-files \
        --others --ignored --exclude-standard --directory --no-empty-directory \
        > "$ignore_list"
    echo "excluding $(wc -l < "$ignore_list" | tr -d ' ') gitignored path(s) (incl. node_modules, .env)"

    # -rt (no perms/owner/symlinks — meaningless on FAT), --modify-window=1 for
    # FAT's 2 s timestamp granularity, --delete to mirror (re-runs stay clean),
    # -P for progress on the ~700 MB copy. Scoped to repo/, never the card root.
    rsync -rtP --delete --modify-window=1 --exclude-from="$ignore_list" "$src/" "$dest/"

# Resolve + write <vol>/typoena.conf (Wi-Fi + PAT + git identity). Each value
# runs a ladder: firmware/.env (loaded via `set dotenv-load`) → derived from
# tools already on the machine (git config, gh, the active Wi-Fi network + its
# System-keychain password) → interactive prompt, with the derived value as the
# default. So a newcomer needs no .env: they Enter through the defaults and paste
# a PAT once. The PAT is never derived (a broad `gh auth token` on plaintext
# removable media would defeat the scoped-token model) and never echoed. FAT has
# no file permissions, so physical custody of the card is the control: use a
# fine-grained PAT (contents:write on just the notes repo) so a lost card is a
# one-token revoke. <repo_src> (optional) seeds the git remote; without it the
# remote is derived from the card's existing clone.
_write-conf vol repo_src="":
    #!/usr/bin/env bash
    set -euo pipefail
    conf="{{vol}}/typoena.conf"
    repo_src="{{repo_src}}"; repo_src="${repo_src%/}"
    interactive=1; [ -t 0 ] || interactive=0

    # ask "label" "default" → chosen value on stdout; prompt shown on stderr (so
    # it survives the $(...) capture). Non-interactive → returns the default.
    ask() {
        local label="$1" def="${2:-}" ans
        if [ "$interactive" = 0 ]; then printf '%s' "$def"; return; fi
        read -r -p "  $label${def:+ [$def]}: " ans || ans=""
        printf '%s' "${ans:-$def}"
    }
    # like ask but hides input (secrets). A present default reads as "keep current".
    ask_secret() {
        local label="$1" def="${2:-}" ans
        if [ "$interactive" = 0 ]; then printf '%s' "$def"; return; fi
        read -r -s -p "  $label${def:+ [keep current]}: " ans || ans=""; printf '\n' >&2
        printf '%s' "${ans:-$def}"
    }

    # ── derive defaults (silent; empty when a tool is missing/unauthed) ──────────
    # remote: .env → source repo's origin → the card's existing clone.
    remote="${TW_REMOTE_URL:-}"
    if [ -z "$remote" ] && [ -n "$repo_src" ] && [ -d "$repo_src/.git" ]; then
        remote="$(git -C "$repo_src" remote get-url origin 2>/dev/null || true)"
    fi
    if [ -z "$remote" ] && [ -d "{{vol}}/{{sd_repo_dir}}/.git" ]; then
        remote="$(git -C "{{vol}}/{{sd_repo_dir}}" remote get-url origin 2>/dev/null || true)"
    fi
    a_name="${TW_AUTHOR_NAME:-$(git config user.name 2>/dev/null || true)}"
    a_email="${TW_AUTHOR_EMAIL:-$(git config user.email 2>/dev/null || true)}"
    gh_user="${TW_GH_USER:-}"
    [ -z "$gh_user" ] && gh_user="$(gh api user --jq .login 2>/dev/null || true)"
    # ssid: .env → the Mac's active Wi-Fi network.
    wifi_if="$(networksetup -listallhardwareports 2>/dev/null | awk '/Wi-Fi/{getline; print $2; exit}')"
    ssid="${TW_WIFI_SSID:-}"
    [ -z "$ssid" ] && ssid="$(networksetup -getairportnetwork "${wifi_if:-en0}" 2>/dev/null | sed -n 's/^Current Wi-Fi Network: //p')"
    wifi_pass="${TW_WIFI_PASS:-}"
    pat="${TW_PAT:-}"

    # ── confirm / fill via prompts ──────────────────────────────────────────────
    [ "$interactive" = 1 ] && echo "configuring $conf — press Enter to accept each [default]:" >&2
    ssid="$(ask "Wi-Fi SSID" "$ssid")"
    # Keychain read happens after the SSID is final (the user may have edited it).
    # Reading a System-keychain Wi-Fi password can pop a macOS auth dialog — only
    # attempt it interactively so scripted runs never trigger a surprise prompt.
    if [ -z "$wifi_pass" ] && [ -n "$ssid" ] && [ "$interactive" = 1 ]; then
        echo "  looking up Wi-Fi password for '$ssid' in Keychain (approve the macOS dialog if it appears)…" >&2
        wifi_pass="$(security find-generic-password -wa "$ssid" 2>/dev/null || true)"
    fi
    wifi_pass="$(ask_secret "Wi-Fi password" "$wifi_pass")"
    remote="$(ask "Git remote URL" "$remote")"
    gh_user="$(ask "GitHub username" "$gh_user")"
    pat="$(ask_secret "GitHub PAT (fine-grained, contents:write)" "$pat")"
    a_name="$(ask "Commit author name" "$a_name")"
    a_email="$(ask "Commit author email" "$a_email")"

    # ── require the essentials (a blank config ships a dead device) ──────────────
    missing=""
    [ -n "$ssid" ]   || missing="$missing Wi-Fi-SSID"
    [ -n "$remote" ] || missing="$missing git-remote-URL"
    [ -n "$pat" ]    || missing="$missing GitHub-PAT"
    if [ -n "$missing" ]; then
        echo "error: missing required config:$missing" >&2
        [ "$interactive" = 0 ] && echo "       (no TTY — set these in firmware/.env or run interactively)" >&2
        exit 1
    fi

    # ── write ───────────────────────────────────────────────────────────────────
    {
        printf '# Typoena runtime config — generated by `just init`/`provision`.\n'
        printf '# Plaintext secrets on removable media: keep the card safe; scope TW_PAT\n'
        printf '# to contents:write on just the notes repo. `key=value`, `#` = comment.\n'
        printf 'TW_WIFI_SSID=%s\n'   "$ssid"
        printf 'TW_WIFI_PASS=%s\n'   "$wifi_pass"
        printf 'TW_REMOTE_URL=%s\n'  "$remote"
        printf 'TW_GH_USER=%s\n'     "$gh_user"
        printf 'TW_PAT=%s\n'         "$pat"
        printf 'TW_AUTHOR_NAME=%s\n' "$a_name"
        printf 'TW_AUTHOR_EMAIL=%s\n' "$a_email"
    } > "$conf"
    mask() { if [ -n "${1:-}" ]; then printf 'set'; else printf 'MISSING'; fi; }
    echo "wrote $conf (secrets never printed):"
    echo "  wifi: ssid=$(mask "$ssid") pass=$(mask "$wifi_pass")"
    echo "  git:  remote=$(mask "$remote") gh_user=$(mask "$gh_user") pat=$(mask "$pat")"
    echo "  author: name=$(mask "$a_name") email=$(mask "$a_email")"

# Flush + eject so the card can go straight into Typoena.
_eject vol:
    #!/usr/bin/env bash
    set -euo pipefail
    sync
    echo "ejecting {{vol}}"
    if diskutil eject "{{vol}}" >/dev/null 2>&1; then
        echo "✅ card ejected — remove it and insert into Typoena"
    else
        echo "⚠️  eject failed (a file may still be open) — eject '{{vol}}' from Finder before removing"
    fi
