# BtToxin_Digger (pixi) reproduction

This repo is a **reproducible runtime environment + example outputs** for
BtToxin_Digger 1.0.10 with **BLAST v5 database compatibility**. It is **not**
an official fork or a new BtToxin_Digger release.

## License / Citation / Disclaimer

- **BtToxin_Digger** is developed by its original authors; cite the upstream
  publication if you use it in research.
- **This repository** only provides an environment wrapper (pixi) and example
  runs for reproducibility; it does not modify BtToxin_Digger source code.
- **Disclaimer**: This is an independent, community-maintained setup and is
  not endorsed by the upstream authors.

This directory reproduces the BtToxin_Digger environment from
`quay.io/biocontainers/bttoxin_digger:1.0.10--hdfd78af_0` using pixi so the
`scripts/run_single_fna_pipeline.py` digger step can be run without Docker.

## 1) Environment definition (vs docker image)

- `pixi.toml` keeps `bttoxin_digger=1.0.10` + `perl=5.26.2` (legacy stack) while
  upgrading `blast` to a v5-capable release for BLASTDB v5.
- Changes relative to `quay.io/biocontainers/bttoxin_digger:1.0.10--hdfd78af_0`:
  - BLAST+ upgraded from 2.12.0 to 2.16.0 (required to read v5 databases).
  - Explicitly pinned `perl-file-tee==0.07` and `perl-list-util==1.38`.
  - `channel-priority = "disabled"` to allow mixing bioconda/conda-forge and
    the legacy label for perl compatibility.
Create the environment:

```
cd /home/zly/project/bttoxin-pipeline/runs/bttoxin_digger_v5_repro
pixi install
```

## 2) Database wiring (BLAST v4 vs v5)

The external BTTCMP database under `external_dbs/bt_toxin` ships with a BLAST
v5 index (built by newer BLAST+). If you run with BLAST 2.7, you must rebuild
v4 databases; with BLAST >= 2.10, you can use the v5 database directly.

### Recommended: use the shared `external_dbs` (no copy)

Keep a single source of truth and link it into the pixi environment:

```
ENV_BIN=/home/zly/project/bttoxin-pipeline/runs/bttoxin_digger_v5_repro/.pixi/envs/default/bin
ln -sfn /home/zly/project/bttoxin-pipeline/external_dbs/bt_toxin \
  "$ENV_BIN/BTTCMP_db/bt_toxin"
```

This avoids duplicating a large database inside the repo.

### Optional: freeze a snapshot inside this repo

If you want this repo to be self-contained, copy a snapshot and point the
environment at it (note: consider Git LFS if you intend to push it):

```
SNAPSHOT=/home/zly/project/bttoxin-pipeline/runs/bttoxin_digger_v5_repro/external_dbs_snapshot
mkdir -p "$SNAPSHOT"
cp -a /home/zly/project/bttoxin-pipeline/external_dbs/bt_toxin "$SNAPSHOT/"
ln -sfn "$SNAPSHOT/bt_toxin" "$ENV_BIN/BTTCMP_db/bt_toxin"
```

Rebuild `bt_toxin` using the external FASTA:

```
ENV_BIN=/home/zly/project/bttoxin-pipeline/runs/bttoxin_digger_v5_repro/.pixi/envs/default/bin
V4_DB=/home/zly/project/bttoxin-pipeline/runs/bttoxin_digger_v5_repro/bt_toxin_v4

mkdir -p "$V4_DB"
cp -a /home/zly/project/bttoxin-pipeline/external_dbs/bt_toxin/db "$V4_DB/"
ln -sfn /home/zly/project/bttoxin-pipeline/external_dbs/bt_toxin/seq "$V4_DB/seq"

"$ENV_BIN/makeblastdb" \
  -in /home/zly/project/bttoxin-pipeline/external_dbs/bt_toxin/seq/bt_toxin20251104.fas \
  -dbtype prot \
  -out "$V4_DB/db/bt_toxin" \
  -parse_seqids

ln -sfn "$V4_DB" "$ENV_BIN/BTTCMP_db/bt_toxin"
```

For BLAST v5 (current pixi.toml), point back to the external DB:

```
ln -sfn /home/zly/project/bttoxin-pipeline/external_dbs/bt_toxin \
  "$ENV_BIN/BTTCMP_db/bt_toxin"
```

Rebuild the negative-set (back) database bundled with BtToxin_Digger:

```
"$ENV_BIN/makeblastdb" \
  -in "$ENV_BIN/BTTCMP_db/back/seq/negative_set-20210607" \
  -dbtype prot \
  -out "$ENV_BIN/BTTCMP_db/back/db/back" \
  -parse_seqids
```

## 3) Run BtToxin_Digger (assembled genome)

`run_digger_pixi.sh` sets `RATTLER_CACHE_DIR` inside this directory so pixi can
write its cache in the workspace (the default `~/.cache` path is blocked by the
sandbox).

Example for a single `.fna` (use a clean working directory):

```
mkdir -p /home/zly/project/bttoxin-pipeline/runs/bttoxin_digger_v5_repro/work/C15_pixi_run_v5
cd /home/zly/project/bttoxin-pipeline/runs/bttoxin_digger_v5_repro/work/C15_pixi_run_v5

bash ../run_digger_pixi.sh ../examples/inputs .fna 4
```

If you want to bind `external_dbs/bt_toxin` explicitly:

```
bash ../run_digger_pixi.sh ../examples/inputs .fna 4 /home/zly/project/bttoxin-pipeline/external_dbs/bt_toxin
```

Outputs land under `Results/` in the working directory.

### 参数说明（pixi run_digger_pixi.sh）

- `input_dir`: 输入目录（里面放 `.fna` 文件）
- `scaf_suffix`: 输入文件后缀（例如 `.fna`）
- `threads`: 线程数（默认 4）
- `bttoxin_db_dir`: 外部 bt_toxin 数据库路径（可选）

### 与 scripts/run_single_fna_pipeline.py 的一致性

pixi 脚本调用的 BtToxin_Digger 参数与 `scripts/run_single_fna_pipeline.py`
里的 docker 调用一致，核心参数对照如下：

- `--SeqPath <dir>`：输入目录  
- `--SequenceType nucl`：核酸输入  
- `--Scaf_suffix .fna`：文件后缀  
- `--threads 4`：线程数  

差异点：

- docker 版本会自动绑定 `external_dbs/bt_toxin`（若存在），并把输出整理到
  `runs/<out_root>/digger`；pixi 版本默认在当前工作目录生成 `Results/`。
- `scripts/run_single_fna_pipeline.py` 还会继续运行 Shotter + report；
  pixi 脚本只执行 BtToxin_Digger 本体。

## 4) Outputs and comparison (examples)

Inputs copied into this workspace:

- `runs/bttoxin_digger_v5_repro/examples/inputs/C15.fna`
- `runs/bttoxin_digger_v5_repro/examples/inputs/HAN055.fna`

- Example pixi runs:
  - `runs/bttoxin_digger_v5_repro/examples/C15_pixi_v5`
  - `runs/bttoxin_digger_v5_repro/examples/HAN055_pixi_v5_clean`
- Example docker runs:
  - `runs/bttoxin_digger_v5_repro/examples/C15_docker/digger`
  - `runs/bttoxin_digger_v5_repro/examples/HAN055_docker/digger`

See `runs/bttoxin_digger_v5_repro/examples/COMPARE_REPORT.md` for the comparison summary.

Diff files:

- `runs/bttoxin_digger_v5_repro/examples/diffs/C15_docker_vs_pixi_v5.diff`
- `runs/bttoxin_digger_v5_repro/examples/diffs/HAN055_docker_vs_pixi_v5_clean.diff`

## 5) External DB update (v5)

When `external_dbs/bt_toxin` is updated from the BtToxin_Digger repo, the BLAST
database is v5, which requires BLAST >= 2.10.0. That is why this pixi
environment upgrades BLAST to 2.16.0.

After updating `external_dbs/bt_toxin`, ensure the pixi environment still points
to that directory (see Section 2). With BLAST 2.16.0, no re-index is needed
because the upstream repo already ships v5 indices. If you downgrade BLAST to
2.7, rebuild a v4 DB (Section 2).

### 更新步骤

```bash
mkdir -p external_dbs
rm -rf external_dbs/bt_toxin tmp_bttoxin_repo

git clone --filter=blob:none --no-checkout https://github.com/liaochenlanruo/BtToxin_Digger.git tmp_bttoxin_repo
cd tmp_bttoxin_repo

git sparse-checkout init --cone
git sparse-checkout set BTTCMP_db/bt_toxin
git checkout master

# 把目录拷贝到你的项目 external_dbs 下
cd ..
cp -a tmp_bttoxin_repo/BTTCMP_db/bt_toxin external_dbs/bt_toxin

# 清理临时 repo
rm -rf tmp_bttoxin_repo
```

### 验证数据库绑定

```bash
# 检查数据库文件是否完整
ls -lh external_dbs/bt_toxin/db/

# 验证容器能正确访问绑定的数据库
docker run --rm \
  -v "$(pwd)/external_dbs/bt_toxin:/usr/local/bin/BTTCMP_db/bt_toxin:ro" \
  quay.io/biocontainers/bttoxin_digger:1.0.10--hdfd78af_0 \
  bash -lc 'ls -lh /usr/local/bin/BTTCMP_db/bt_toxin/db | head'
```

输出应显示 `.pin/.psq/.phr` 等文件，且时间戳/大小与宿主机一致，说明绑定成功。

### 使用外部数据库运行 Pipeline

脚本会自动检测 `external_dbs/bt_toxin` 目录，若存在则自动绑定：

```bash
# 自动使用 external_dbs/bt_toxin（推荐）
uv run python scripts/run_single_fna_pipeline.py --fna tests/test_data/HAN055.fna

# 或手动指定数据库路径
uv run python scripts/run_single_fna_pipeline.py \
  --fna tests/test_data/HAN055.fna \
  --bttoxin_db_dir /path/to/custom/bt_toxin
```

### 注意事项

- `db/` 目录是必需的：运行时 BLAST 只读取 `db/` 下的索引文件
- `seq/` 目录是可选的：仅用于留档或重新生成索引
- 绑定模式为只读 (`ro`)：防止容器意外修改宿主机数据库
- 不需要重新 index：GitHub 仓库已包含预构建的 BLAST 索引

## 6) Repository layout

```
runs/bttoxin_digger_v5_repro/
├─ .pixi/                      # pixi environment cache
├─ pixi.toml                   # environment definition (bttoxin_digger + blast)
├─ pixi.lock                   # resolved environment
├─ run_digger_pixi.sh           # wrapper to run BtToxin_Digger in this env
├─ README.md
└─ examples/
   ├─ inputs/                   # copied test inputs (C15.fna, HAN055.fna)
   ├─ C15_pixi_v5/              # pixi run output (example)
   ├─ HAN055_pixi_v5_clean/     # pixi run output (example)
   ├─ C15_docker/               # docker output copy (baseline)
   ├─ HAN055_docker/            # docker output copy (baseline)
   ├─ diffs/                    # docker vs pixi diffs
   └─ COMPARE_REPORT.md
```