Immutable NoSQL database that works on a single plain text file

## Features

- **Information is never lost**. Even if you make updates or deletions, you will be able to recover any information at any time.
- There are **no restrictions on the data structure or columns**, since dictionaries are used without limitations on nesting. Similar to MongoDB Documents.
- All the information is **stored in a JSON file**.
- Extremely fastb since it has no queue or locking limitations.
- **Minimalistic** to implement and use.

## Advantages of using an immutable database

- **High level of consistency and accuracy of data**, such as a hospital patient's chronology or banking data. It cannot be modified once it has been aggregated.
- They **simplify the process of backing up and restoring data**, because you can always **revert to the original version** of the data if necessary.
- **Very secure**, modifying existing data will be detected and rejected.

## Install

```python
pip3 install --user advance-touch
```

## Docs

All documentation can be read as a sequential tutorial.

### Step1: Start

To load the database you must import reliable_db and start it.

```python
import fiable_db

fiable_db.start()
```

It will create a file named `fiable_db.json` in the current directory. If you want to change the name of the file, you can do it by passing the name as a parameter.

```python
fiable_db.start("my_db.json")
```

If the file already exists, it will be loaded. Nothing is deleted here!

### Step 2: Agregation

Only one:

```python
fiable_db.add({"name": "Miguel", "age": 41, "height": 189})
// {"id": 1, "rev": 1, "data": {"name": "Miguel", "age": 41, "height": 189}}
```

Various:

```python
fiable_db.add(
    [
        {"name": "Noelia", "age": 34, "height": 165},
        {"name": "Juan", "age": 41, "height": 187},
        {"name": "Valentina", "age": 12, "height": 142},
    ]
)
//  [
//      {"id": 2, "rev": 1, "data": {{"name": "Noelia", "age": 34, "height": 165}},
//      {"id": 3, "rev": 1, "data": {{"name": "Juan", "age": 41, "height": 187}},
//      {"id": 4, "rev": 1, "data": {{"name": "Valentina", "age": 83, "height": 172}},
//  ]
```

### Step 3: Update

Update a key:

```python
fiable_db.update(4, {"age": 21})
// {"id": 4, "rev": 2, "data": {{"name": "Valentina", "age": 21, "height": 172}}
```

Add new key:

```python
fiable_db.update(4, {"is_active": True})
// {"id": 4, "rev": 3, "data": {{"name": "Valentina", "age": 21, "height": 172, "is_active": True}}
```

Delete key:

```python
fiable_db.update(4, {"height": None})
// {"id": 4, "rev": 4, "data": {{"name": "Valentina", "age": 21, "is_active": True}}
```

Forcing new structure.

```python
fiable_db.update(4, {"name": "Javier", "email": "foo@example.com"}, force=True)
// {"id": 4, "rev": 5, "data": {{"name": "Javier", "email": "foo@example.com"}}
```

### Step 4: Delete

```python
fiable_db.delete(4)
// {"id": 4, "rev": 6, "data": None}
```

### Step 5: Find one

Search by id.

```python
fiable_db.find_one(id=2)
// {"id": 2, "rev": 1, "data": {{"name": "Noelia", "age": 34, "height": 165}}
```

Search by value.

```python
fiable_db.find_one(data={"name": "Noelia"})
// {"id": 2, "rev": 1, "data": {{"name": "Noelia", "age": 34, "height": 165}}
```

Search by several values.

```python
fiable_db.find_one(data={"name": "Noelia", "age": 34})
// {"id": 2, "rev": 1, "data": {{"name": "Noelia", "age": 34, "height": 165}}
```

No results.

```python
fiable_db.find_one(data={"name": "Noelia", "is_active": False})
// None
```

### Step 6: Find all


```python
fiable_db.find_all(data={"age": 41})
// [
//      {"id": 1, "rev": 1, "data": {{"name": "Miguel", "age": 41, "height": 189}},
//      {"id": 3, "rev": 1, "data": {{"name": "Juan", "age": 41, "height": 187}},
// ]
```

### Step 7: See previous revisions

Previous version to be deleted.

```python
fiable_db.find_one(id=4, rev=3)
// {"id": 4, "rev": 3, "data": {{"name": "Valentina", "age": 21, "height": 172, "is_active": True}}
```

You can also use negative numbers.

```python
fiable_db.find_one(id=4, rev=-1)
// {"id": 4, "rev": 3, "data": {{"name": "Valentina", "age": 21, "height": 172, "is_active": True}}

fiable_db.find_one(id=4, rev=-2)
// {"id": 4, "rev": 2, "data": {{"name": "Valentina", "age": 21, "height": 172}}
```

---

Thanks to the power of 🐍 Python 🐍